What’s the most annoying part of your life/​job?

Hi, I’m an en­trepreneur look­ing for a startup idea.

In my ex­pe­rience, the rea­son most star­tups fail is be­cause they never ac­tu­ally solve any­one’s prob­lem. So I’m cheat­ing and start­ing out by iden­ti­fy­ing a spe­cific per­son with a spe­cific prob­lem.

So I’m ask­ing you, what’s the most an­noy­ing part of your life/​job? Also, how much would you pay for a solu­tion?