Wicca is a beautiful thing and it does help with problems a lot.
You can find many spells that help with depression, anger, insomnia, anxiety, etc.
This site is really, really helpful. They have every spell that yo could ever wish for.
So I'd suggest that you look around in the Spell area and you'll be able to find some spells/rituals that will help.
Its also good to use herbs as well. Like making an herbal tea, a sachet (A small cloth pouch filled with helpful herbs), You can also take an herb bath, that really helps sometimes.
If you need any help, feel free to message me