Those are all things I've found coaching to help with. I had tried other coaches before settling with mine, she was recommended by an investor who had worked with her closely for years. To be honest, so much of it is deeply personal. She works brilliantly for me, but I'm sure others might have different experiences (although she coaches many founders).

I think the best thing to do is to get recommendations / referrals from people you know, and try a few sessions. It really takes time (in my experience) to find a good rhythm with a coach, and to learn how to work with that person. An important indicator for me was that I felt really comfortable really quickly, and that my coach didn't just prescribe solutions, but instead helped me think through problems.