This website has loads of downloadable resources that especially support social and emotional learning and mananging strong feelings. The activities will help in supporting children's self-esteem and emotions. The links I have listed are free and many suggest books that may also be helpful, but there resources available that can be purchased.
wellbeing shield: https://www.elsa-support.co.uk/wellbeing/
sleepy mobile: https://www.elsa-support.co.uk/sleepy-mobile/
gratitudes and emotions tracker: https://www.elsa-support.co.uk/gratitude-and-emotions-tracker/
worry jar activity: https://www.elsa-support.co.uk/worry-jar/
positivity potion booklet: https://www.elsa-support.co.uk/positivity-potion-booklet/
breathing exercise wheel: https://www.elsa-support.co.uk/breathing-exercise-wheels/
safe place activity: https://www.elsa-support.co.uk/safe-place/
gratitude jar: https://www.elsa-support.co.uk/gratitude-jar/
self-esteem booster wheel: https://www.elsa-support.co.uk/self-esteem-booster-wheel/
emotions wheel art therapy: https://www.elsa-support.co.uk/emotions-wheel-art-therapy/
https://www.elsa-support.co.uk/category/free-resources/page/2/