…ate yourself out of trying things, get too hung up on past failures, and won’t be fun to be around. If you’re too positive, you’ll be overconfident, fail to anticipate how your plans can go awry, and constantly let yourself off the hook for your failures, without learning from them.
So true! Rather than being too positive or negative, we should focus on being optimistically realistic.
It can be useful to see the positive side of a negative situation, but it is naive to live in the light of the positive.