the number one indicator that you should see a therapist is thinking “hmm, should I see a therapist?”
I want to make one thing clear that I don’t think a lot of people even realize: you don’t need to be mentally ill to see a therapist. You don’t need to have experienced serious trauma or be deeply unhappy or think your brain is Up To Something in a Major Way to benefit from therapy. If you just want help sorting through your feelings, dealing with heartbreak, or venting your fears about the future, you can talk to a therapist! It’s allowed! It’s encouraged!
Therapists are good, helpful people. And they don’t pry, either. You don’t have to get off into “and how do you feel about your mother” and stuff like that, in fact it may not ever come up, you can just chat about Emotions. Or even just emotions.