This is a great time for some self-assessment especially being in your mid 20s. I left the retail gig and it was necessary for my well being but some things are more deeply rooted and won't go away by simply changing your role.

Will higher income necessarily change your feeling? I am aware that this is a finance forum but how are you doing in general in life such as hobbies/social/travelling//fitness/health side of things? I recently picked up cycling as a new hobby and it significantly improved my mental health.

Sounds like you are a great saver. Spend some for yourself once in a while too. Sometimes getting what you want when you want is more satisfying than looking for the next best deal.