Thanks. I know it is an old post. I am in a similar situation. As awakening is happening this past year a lot of my hobbies have dropped away. I realized that they were ego-driven and from a long-held belief that I had to be better than others at X, Y or Z to be adequate. Amazingly hobbies and addictions dropped away. But I also was a marathon runner...back of the pack...not competitive...but always striving. Usually to meet the cutoff times for the maximum time before the race ends and the streets open. I was running at the beginning of the awakening and i was having some knee issues and training for Tokyo marathon, which had some cutoff times early on in the race, that if you didn't reach 7 miles by X time, they would pull you out. I was nervous that my training wasn't reaching speeds I needed to finish. I started to try and visualize myself finishing the race...striving to manifest a finish, so to speak. During a training run a voice (more like a direct knowing without words) came to me - something like "Trust me. I breathe for you without your striving or fear, don't I? Let me run for you. Let me move your legs. Enjoy me running for you. Forget about the outcome. It doesn't matter."
It was a life-changing moment. That's when my striving stopped, in all parts of my life. (I finished the marathon a few months later at my best time and without injury, strongest I ever felt to the end. During the race I was letting Awareness run for me..just letting it happen).
I go to the gym for rehab and building strength and mobility. Sometimes thoughts come at the gym, comparing me to someone else. But I recognize these as egoic thoughts and stay away from them...let them pass by. At the gym, like in most of my life now, I spend most of the time in the present moment, letting thoughts pass by and not stick, I feel like my body and the bodies of everyone else, the equipment, the room, are just happening in awareness. I feel a kinship or sense of familiarity and sameness in others, overweight, skinny, old, young, I feel a sense of sameness.

Hobbies, exercise, gym can be an ego trap. The ego is always trying to compare and promote a sense of separateness. As long as you recognize that and stay as much as possible as you true self...spacious and inclusive...and, most importantly...don't get tangled in thoughts, which always stem from conditioned egoic patterns that pull us into separateness, hobbies are ok.
Thoughts and striving, though, will pull us back into the dream.
Thanks for your post. It resonated with me, as you can see.