I think you underestimate how difficult thinking is for most people.
That's true (Dunning-Kruger effect etc.).
Although, isn't the question not about difficulty, but about whether you really believe you should have, and deserve to have, a good life? I mean, if the responsibility is yours, then it's yours, no matter whether it's the responsibility to move a wheelbarrow full of pebbles or to move every stone in the Pyramids. And your life can't really genuinely improve until you accept that responsibility, no matter what hell you have to go through to become such a person, and no matter how comfortable/'workable' your current ...
r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.