Mind Self Esteem: Educational reading from Mind Charity explaining the possible causes of low self-esteem, what you do and where to go for can support.
Developing Resilience: advice and tips on ways you can deal with pressure, and reduce the impact that stress has on your life.
Self-compassion by Dr Kristen Neff provides information on what self-compassion is and exercises on how we can develop our own self-compassion which could be helpful in dissolving self-critical and negative thoughts.