Just missed out again...regretting my analyst experience

You stayed up for 3 days straight? Look, I admire that work ethic... but that's crazy.

Either you're not working efficiently enough, or you need to stand up for yourself/your health and refuse to work 3 days straight. That will put you close to death. 

Perhaps you were exaggerating... but if not, that conveys a flaw in both your firm/your seniors, and your ability to monitor what's best for your long-term interest. 

But congrats on the great exit.   

Internal politics are extremely challenging - this is true in absolutely ANY career, just stings a bit more in banking when you're working such brutal hours. Take this as a learning experience, you have a fresh start at an amazing firm where you can more than make up the money. And you've already identified what you need to improve on, you're way ahead of the game!

Try to be more of a relationship guy at your next role, instead of just the quiet grinder. Network with seniors, take your VPs out for coffee. Do not grind so hard to the point your physical health is suffering. Instead, build some political capital. Find out the seniors' favorite sports team, and follow them a bit so you can chat about it. Ask them their thoughts on an industry trend you read an article about and they have a lot of knowledge on. Have personal goals for networking and chatting, just like you would have performance goals.

Those small items are WAY more important than being in the office M-F when no one else is there to see you, or being the absolute best at your job very quietly. 

Analyst 1 in IB - Gen

I have been diagnosed with a life-shortening chronic disease that usually does not affect people under the age of 40 (my doctor has explicitly said this was primarily due to stress and lifestyle from work).

Why am I not surprised that your region is set to 'France'?

Damn bro take a xanax

I've heard that some firms can only have X amount of top performers and the rest of the good performers get placed in middle bucket. That's exactly where politics come in. Best of luck in PE. I got top bucket this year having similar strengths to yours, however I thrived by taking out my VP/MD/Associates out to lunch once per quarter to catch up. This goes an incredible long way come review season. This is how I have gotten top bucket scores. 

LOL

Working 3 days in a row is fucking stupid and that's how one BofA intern died in London in 2013. I will never believe that analyst \ intern work is so important that it requires you to put your health on the line. Getting a life-long disease just because your seniors are incapable of planning work streams?

First and foremost, congratulations on your success.  You're a non-target who crushed a BB analyst stint and is now headed to megafund, full stop.  

Many of us have had our struggles with office politics and it is very much a learned skill like anything else.  A few things to consider based on my personal experience.

• Separating yourself is important but also a fine line -- Going above and beyond should always serve you well, but radical separation can make you a pariah.  Your 4th paragraph is frankly insane... Presumably, none of the other analysts were hospitalized at any point, yet you've managed 3 times.  While the answer may be that you're working that much harder then them, the follow up might be "Why?".  If someone is reviewing the class and aware of that fact, regardless of reality, it's very likely that your work ethic is actually working against you.
• You should never assume others in the organization know what you do, or how hard you are doing it -- Immediately contradicting my first point, but without all the context I wanted to try and hit both sides of this...  This is especially magnified with MDs who generally have 0 idea who is doing what on their deal. Reading your post, it's clear that you're an absolute weapon, but ask yourself if you've done enough to sell your contributions to those in senior positions.  If you're the only one in the office, that's great, but don't assume that everyone is aware and giving you props.
• Likeability > ability -- Exaggerating a bit with that one, but in reading your post, the main feedback you're getting is "nothing personal, just politics".  The harshest interpretation is that other analysts in your cohort were just better liked.  I can also appreciate that this idea is probably the hardest to accept because it is so qualitative.  No one likes a hardo, even in this industry that pretty much consists entirely of hardos.  We work so much already and it's possible that you're going so far above and beyond that you're alienating others.
• Don't be a Robot -- This goes along with likeability and is the single most important thing to remember with respect to "office politics".  At the analyst level, you really just do the work that others assign to you, there is not much outside of that.  If ability to do the job is table stakes, your opportunity to separate comes from your ability to connect with others.  This can be internally of course, but just as impactful is externally (with clients).  Even as an analyst, you usually have a ton of those opportunities.  The biggest can be with opening calls, are you robotically repeating "Hi, who just joined?" or are you taking those few minutes that you're dialed in early to make a connection with the client?  I've seen so many examples of analysts becoming the favorite person on the deal team just by being the affable youngster.

Others may disagree but this is such a relevant topic so thank you for sharing your story (edit: before deleting it).  The best thing you can do now is briefly reflect and then move on.  Don't let your ambition rob you of what should be overwhelming positivity around your accomplishments. 

I think you're such a fucking hardo that people don't want to vouch for you. Nobody likes virgin tryhards.