You work on yourself, alone
It’s important to keep working on yourself, even when you’re in a relationship. But you are still in a relationship, so when you work on yourself, it’s something you can share in with your partner. If you’re taking an evening class or joining a book club or traveling to a place you’ve never been, include your partner. Many people make the mistake of keeping their self-improvement to themselves, and being quite private about it. But that leaves their partner feeling left out and isolated.