You definitely could try sigil work.
a couple months ago I felt down. So I drew a hexagram and I did an “As Above So Below” type process. I put three two negative feelings at the top two edges:
first feeling was “jaded heart” I felt like my ego was in the way of experiencing a friendship to its fullest potential and once distance separated me from that person I was feeling regret.
second thought was “not yet divine” I felt that I am not shining light on others and not yet perfect. This was my way of feeling that I am some type of succubus when I would rather be a healer.
I then flipped the hexagram and challenged the first two emotions. Contradicting each.
First contradiction was in response to jaded heart, it put “swimming above” This was to express the knowing that I have the capability to continue progressing and moving towards being less egotistical and setting my sights on connecting better in the future.
second contradiction was in response to not yet divine, I put “not yet blinded” reassuring myself that I am not totally naive and unaware. I know that I am aware of my action, I just haven’t been able to catch myself before acting through trauma responses. But I understand that I am not a lost cause.
The other two sides are just space and time related…meaning that through travel and fluidity of life, these feelings will come to pass.
I love that there is a book on a magical approach to CBT, I can’t wait to pick that one up. CBT is an excellent tool on reshaping behavioral patterns. But simply, the more you challenge your beliefs and slowly build a discipline with restructuring those thought processes; the more you will start to believe in yourself and feel better.
just always try to see yourself on the flip side of things.

I hope this helps point you in the right direction.