I supplemented therapy with a group, luckily. And I had one very good friend from that group. Together we kept motivating each other to do and try things we might not have on our own. I exercised and incorporated the therapy into my exercise. A lot of my self-talk would take place while I was jogging or on the bike. I attend meet-up groups for proactivity reasons but also for personal interests - and that's proactive, too.
People in the therapy group here now, they are so much more active than I ever was. They organize weekly events to do outside of therapy hours. Most of them meet out at least 4 nights a week, sometimes more, different activities. They tend to look for social events that really take the initiative for working against anxiety. For example yesterday was Toastmasters, tonight was swing dancing, tomorrow is salsa. Thursday might be a movie night and/or we meet at the mall for socializing and social experiments. Friday we're attending laughter club. Saturday is therapy group day. We often go out for lunch after. Sunday is sort of outdoor day or whatever happens. That's been the trend these past few weeks. Last Sunday some of the members did river tubing. The group members do way more than I currently do. I really admire them for how much motivation they continue to have.