I’ve had a low opinion of myself for as long as i can remember. I’ve always hated myself and can never feel proud of my achievements no matter how big or small they are; im just “oh i did that: cool!” And be on my way.
How do I see myself as a human being worthy of love instead of a personification of human garbage?

Accomplish things that you, right now, identify as something to be proud of.
Then reflect.
So like, ever summited a mountain? If you’re able bodied and there’s one near my, go hike it. Bet there’s a rewarding view at the top.
Then when that automatic negative thought comes up, squash it. “I suck. Oh wait no, I climbed a mountain the other day. That was rad. Im awesome.”