I've always had really, really low self-esteem. I always presume I'm bad at things, people don't like me, I'm a burden, I'm unlikeable. It's so sad looking back at my life and realising how much it's affected me. I saw a photograph of me earlier from when I was around 8 years old at a maths competition the local primary schools did which I won. I remember when taking the photograph how misplaced I felt and that I had just got lucky or they felt sorry for me, or there was nobody better so it was an easy year to win/they were lumbered with me winning.
Does anyone have any advice on how to increase my self-esteem, like tangible actions I can make? I'm in my 20s and have started a good career, but it still follows me around.