The only positive type affirmations I do, are ones I make up, and that deep down I know are true. I have never tried reading any or that sort of thing. But it does help me, but I do it pretty casually, or when I will be in a situation where I need to remind myself who I am and what I am made of.

I never tried the way of doing that in front of a mirror daily or anything like that. Maybe to make them work better, make personal ones that you do know are true, even if you forget or sometimes doubt that it is so. Or try to just cut out the negative self talk, and dont worry about replacing it with something else. Seems like talking negatively to ourselves is a much easier task, where we don't doubt it's truth, unlike positive self talk.

We seem to need proof of positives, and zero proof of negatives, if we say we are bad at x,y,or z it must be so. If I say I am.good at x, well I better be able to back that up with tons of examples. Seems a bit backwards, and reminding myself of that seems to help.