Me toxic to me

Hey queens

I have been so toxic to myself. I am so nice with everyone and everything, though some things make me sad and angry but i keep them inside. The bad thing is that i overthink and in a very negative manner. I overthink over the past and give myself anxiety attacks or the future and same thing. Especially the past, i take things that happened and they are so simple and let's say "normal" and i fit them to my fears and feed them with negative thoughts... you can imagine the result. The other day i had a panic attack only from a simple thought. I am so tired, i realize that i need help but i cant pay for therapy now. Any advice queens please