Yes, the sentence "I really need to work on forgiving myself" is grammatically correct.
**Meaning**: The speaker is expressing a personal struggle or challenge related to self-forgiveness. It suggests that they have feelings of guilt or regret and recognize that they need to put effort into accepting and forgiving themselves for their past actions or mistakes.
**Possible rephrasing**:
- "I truly need to focus on learning to forgive myself."
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