What in life holds you back?

What in life holds you back the most? If you could choose one thing. When I say hold you back I think it's self explanatory. Basically, just holds you back from achieving all that you want to achieve. Personally, for me, the fear of failure. How about you all?

Yeah I'd say fear of failure would be my number one inhibitor as well crimson, getting over that fear (at least for me anyway) is never easy but my experience has been that once I get over the hump of holy shit this is new and I'm not 100% sure what to do! it's never as bad as my mind made it out to be beforehand. I find that it's a lot easier when I have a friend who is showing me the ropes or is tagging along to whatever new thing I'm trying out for the first time.

My own self appeal of doing everything difficult alone, while using the exact opposite logic while choosing to help others.

@Laughingman_dd I somewhat feel the same, but, when I used to want to be an attorney, I basically did just that, and, to an extent, it was liberating, on the extreme, quite scary. If you wanted to though, you can become stoic as a native american, just be careful what you wish for.