I think that GAL can take any form you wish...I have focused on career/job/income, home, house, W and kids for 18+ years...aside from my music which I gave up "active" (ie, playing in bands) pursuit when first child was born (and one attempt a few years ago), and my outdoor activities just re-started 4-5 years ago when oldest was old enough...so I hear you on liking to do things alone and not necessarily butterflying socially...lol...I never was all that good at that anyway....
And for my job I have to deal with lots of people and social interaction, so I am just fine doing things on my own when not at work (aside from kids and W, of course). W and kids were my non-work social life pretty much.
GAL is what we want it to be, imho. Mine doesn't necessarily need a lot of social, I do wish I had a few close friends, though, until W is back or if we split, I will work harder on that, but...I am okay doing things by myself.
The more I read your posts, I wonder if you are my long lost sister...
T^2
In the depths of winter, I finally learned that within me there lay an invincible summer. - Albert Camus
Uncertainty is the very condition which impels people to unfold their powers.-Eric Fromm