Alternative hobbies to replace Gran Turismo

I've been nearly 2 months without playing a single game, in this time I not only became more productive but also I replaced some aspects of GT, like hearing real jazz fusion, lounge and DnB artists instead of hearing the OST, watching real races instead of fake ones (aka playing or watching someone else play), searching about the history of cars rather than reading the description or GT Cafe NPC talks, etc. But I still think that something is missing for me to fully forget GT from my life, probably track days? Maybe, but there's something else that I think I can replace over GT that I don't know exactly, can you guys help me?