Solarpunk

I don't think there is a simple answer to this question. First and foremost it depends on your current living situation and how much (economic) freedom you have to change something about it.

I think it is important to look for like-minded people, primarily off-line, but on-line exchange can also help. Maybe look for some place or activity that is likely to attract other people with similar ideas. Or if it doesn't exist, try starting one (yes that's going to be not easy).