Self criticism has a habit of travelling with you. Whatever you were unhappy about then looks perfectly fine now, and the same will be true of today when you look back from a few years out. What changes is not the picture, it is how hard you were being on it.

Rather than trying to feel differently on command, notice the pattern and let it do some work. When the judgement starts up, remember that it has been wrong every previous time. Then get on with the day you are actually in.