Self esteem is nothing more than an idea you have of yourself. It's just an illusion!

Ever felt you were having a so called bad day? Stop, just for a moment and just witness exactly your thinking at that moment, and you'll have your answer as to why you are 'Thinking' you are having a bad day...'Your Thoughts

It's about putting a different interpretation on events, seeing them with different eyes. Re-educate yourself to break the negative emotional aspect that these happenings have over you so you see them from a different perspective.
The strategy to do this is...Cognitive Behavioural Therapy.
CBT is a theory that it's not situations themselves that upset us, but the meanings we give them. Our thoughts and beliefs can block us seeing things that don't fit with what we believe is true. In other words, we continue to hold on to the same old thoughts and fail to learn anything new.

Change your thinking change your life.