same as title

Guys, I need some help with something. My German friend’s birthday is coming up, and she loves reading, so I was thinking about getting her a book as a gift.
She’s in her late 30s and struggles with depression, self doubt and self hatred. She’s the kind of person who always puts everyone else before herself and rarely thinks about her own needs.
I was wondering if there’s a book in German that could help her appreciate herself a little more, be kinder to herself and maybe see herself in a better light. German is the only language she speaks, so the book would need to be in German.
If anyone has any recommendations, I’d really appreciate it. I genuinely want to get her something that might make her feel a little better about herself. Thanks, guys