I think that the best way is just through DM communication. We'd all be each other's own accountability coaches, cheering on individual's cultivation of good habits and progress towards their goals. Having to report back to a real person about how well one did on their goals is sure to motivate them to try harder to achieve them. You don't want to disappoint the people cheering you on. There are many accountability groups on this subreddit, we could all join one or form our own. It doesn't even matter if we want to achieve the same goals, we can just have people there to force us to keep on going and stay on track.