This page links to a list of free, scientifically-validated psychological self-assessments for common issues. If you’re feeling overwhelmed and wondering if a mental health professional might help, this may give you a place to start.
Here’s an article about how to know if it’s time to consider therapy. And here’s a link to Psychology Today which has a decent directory to find licensed mental healthcare providers (you can change country to find providers outside of the U.S.).
Here’s an article about how to choose the right therapist for you.