I believe I know how you feel. Personally speaking, I find change these days difficult to cope with.
One of the reasons I struggle post Twilight render. I reckon age has a lot to do with this, being just the right side of 70.
However, thoughts of inadequacy etc must be resisted much like the negative impacts the average day produces. Giving up is never an answer and never will be, your renders and words of encouragement are something I am not letting go of regardless, keep on keeping on and carpe diem. It makes something and as long as that is not yeast extract and garlic flavoured custard, we are doing OK.
Sod tomorrow, TODAY is a new day, grab it firmly.