There's a great book that helps explain this: "Feel the Fear and Do It Anyway by Susan Jeffers is a classic self-help book that argues fear is a normal and unavoidable part of life, especially when facing growth or change, and that waiting for fear to disappear keeps people stuck. Jeffers’ core message is that confidence comes from action, not the absence of fear, and that by repeatedly doing things that scare you, you build resilience and reduce fear’s power. She emphasizes shifting mindset from helplessness to self-trust, using positive thinking, and accepting that you can handle whatever happens, which ultimately allows you to move forward despite uncertainty."