You could try to go to a craft workshop or free cooking courses, go to play chess for example, volunteer to care for the elderly, with patience and do not rush yourself.
lotsa spaghetti**
Vegetables like spinach with mushrooms and with lettuce I make a salad without cooking anything (All chopped)
Something easy .sweet corn for 10 minutes, I can take the hair of corn for a cold tea
Shrimp with bread crumbs to the pan it takes 20 minutes.
I tried to put that nostalgia in a box and forget about them, if it's too much, try not to think about it and disconnect for a moment and move to a plan b