I've had catastrophically low self confidence for my whole life, but today someone asked me if I knew how to draw, and whether I could draw something for a project we're working on. I thought for a beat and realised that I am in fact quite good at drawing and could answer the question without undermining myself. Felt very powerful.
Later on in the day I had a massive tank in self confidence because I realised I'd fucked something up and need to redo a bunch of work but hopefully thinking about this will bring the spirit back.