Yes. Absolutely.
Answer these questions:
Would you let your best friend treat you like shit? Walk over you? Talk down to you? Make you feel less than a human?
Would you overly criticize every little thing that your best friend does? What they wear? How they talk? How they walk? How they show up? How they think?
Would you allow anybody to talk to you the way you talk to yourself?
If the answers to the above are "no" you are well on your way. What's next?
Treat yourself better. Accept things as they are. Be able to say and mean, "I messed that up, and it's okay. I'll get 1% better next time".
Grant yourself grace. "I'm a work in progress. I know that. Nobody asks me to be perfect. They ask me to do my best. If I fail, great, now I know how to do better."
Love yourself. Practice what you preach. If you wouldn't let anybody talk to you the way you talk to you, then stop talking to yourself that way.
Easier said than than done, right?
Yes, you're right. Nothing worth believe in and doing ever is.
In fact, we should be wary of anything that promises easy returns.
What to do?
Practice. Each day practice. Try to get 1% better.
Be thoughtful about one more decision.
Think one second longer before speaking in one conversation.
Accept one more thing about yourself.
Practice being a better you.
You've got this.