I definitely agree with this. Doing something that has a positive impact on others can be SO rewarding and fulfilling. I changed careers about 6 years ago and fell into a job that does that and I have never been happier.

One thing you could do is instead of setting a goal specifically focused on yourself, you could make your goal based on helping others. You could get into fundraising for meaningful causes that are important to you. You could get into doing something like being a big sister or big brother if they have that sort of thing where you are and help the kids you volunteer with reach their goals. You could volunteer to be a senior companion to your neighbor, or find out what seniors in your area are alone and could use help with small things like shopping or just a check in and visit from time to time to make sure they're ok.

Of course, if you want something more self focused you could always work at learning a new skill. I've done that as well in the past. I decided I wanted to learn how to play the piano and after some research found out it really wasn't that expensive at all. My local music store rented digital keyboards for about $40 / month and I had in person lessons there for about $25 / 30 mins. Once I had the basics, I downloaded an app called Simply Piano and then continued with that, I think that was $120 for the year.

You could also work at learning another language, Duolingo is free and there are other options for that as well.