1) Losses are part of the game. Losing your money doesn’t mean you are a failure, It means you’ve learned something, if you take time to understand why the lose happened in the first place.
I've learned this years ago and helped me with how I overcome the feeling whenever the market is not doing good for me. The acceptance part for having losses is also gonna make us a better investor. It helped me keep up with the plans that I have which is for long term because if I'll make myself too emotional and unaccepting of my losses, I wouldn't be able to make this long in holding Bitcoin. It's also a good coping mechanism to think that if we're in losses, there's someone out there that has lost more than what we've lost, realized and unrealized losses.