Well, let me ask... when you volunteered, for how long was that? (Just wondering if you gave it time, or the other efforts, I've heard creating those habits and reaping the benefits can take a good while.)

As for small goals... well, an example would be complimenting someone randomly during the day, reaching out to one person for help in a small way, telling a coworker you're feeling low and asking if they could share one thing they like about you because you're just having one of those mornings where you can't see it, paying for the coffee of the person behind you in line...

just a tiny little pebble thrown into the river. (And without expectations.)

And I would also take some time and meditate or write on the topic of moments of kindness you've experienced from others- each of us reaching out to help you at PC, try to list all the names in a given week or month by reviewing your post history, past teachers, coworkers, aquaintances, whomever, whatever... a... deliberate weaving together of a metaphorical shawl of kindness to wrap yourself in.