For me, I have:
Not wanting to donate more than 10%.
("There are people dying of malaria right now, and I could save them, and I'm not because...I want to preserve option value for the future? Pretty lame excuse there, Jay.")
Not being able to get beyond 20 or so highly productive hours per week.
("I'm never going to be at the top of my field working like that, and if impact is power-lawed, if I'm not at the top of my field, my impact is way less.")
Though to be fair, the latter was still a pressure before EA, there was just less reason to care because I was able to find work where I could do a competent job regardless, and I only cared about comfortably meeting expectations, not achieving maximum performance.
I felt a lot of this when I was first getting involved in effective altruism. Two of the things that I think are most important and valuable in the EA mindset -- being aware of tradeoffs, and having an acute sense of how much needs to get done in the world and how much is being lost for a lack of resources to fix it -- can also make for a pretty intense flavor of guilt and obligation. These days I think of these core elements of an EA mindset as being pieces of mental technology that really would ideally be installed gradually alongside other pieces of mental technology which can support them and mitigate their worst effects and make them part of a full and flourishing life.
Those other pieces of technology, at least for me, are something like:
For me, this has taken a decade. I don't think I was particularly good at it, I don't know that I made all the right tradeoffs in doing it, and I hope it's faster and better for other people. But I do want people to know that there's a way of living your values that doesn't feel fueled by guilt, that it's possible to be an EA and have a life you just love, and that you should absolutely be aiming to be your strongest and best self rather than the version of yourself who sacrificed the most.