This is a good topic to talk about and I can also bring that on a personal level: as for now I'm playing games that I really love but that aren't doing so great (the first Dead Space, Amnesia and just yesterday I uploaded Superhot) and I'm thinking about something that both I love and is popular. I know it may sound bad playing games because are popular and that is the reason why you must find a balance. Try to use google trends to check if the game is still searched, that helps sometimes. Bye and keep improving!