My mind won't let me be happy

Hi everyone, I'll start out by saying everyone I know says I'm a good person, but sadly I have OCD tendencies and my compulsion is reassurance, I feel like I must reassure I haven't done the bad things my mind convinces me that I've done. Almost always I haven't done any of the things that my mind tells me I do of course. However, the things I have done, are constantly used against me in my head as whenever I try to be happy my mind doesn't want me to, I basically feel like I must punish myself for my misdeeds and that I have to be in a state of depression. I will also have intrusive thoughts of self-harm and it's uncomfortable for sure. Everyone who I've talked to says I'm a good person, but my mind is basically my bully, and unlike normal bullies, this one won't go away after a while. It stays there and every day if I don't distract myself. It'll build up and up and mix in more intrusive thoughts and sometimes I've had mental breakdowns because of all the stress my mind puts on me. Does anyone here have any advice or coping skills to help me? If you do, that would be great, have a fantastic day!

Hi, Have you sought treatment?

Good therapy is what helped me overcome my OCD intrusive thoughts, have you considered seeing a therapist?

Not to say that what you have is an addiction, but to fight my own addictions, I've had success with personifying the voice as someone separate from me, then I talk to it. When I think of it was a separate entity that's trying to inhabit my mind and steer my will, then I can decide what I'll allow it to do to me.

Sometimes it's too hard, but with practice I've found it helpful. I hope you can get some therapy, I think that would be really good.

Thank you all for the replies, I've been having some treatment recently after I made this post and it's been helping me feel better. Your kind words and advice also help with that too.