Ideally you don't want to just switch addictions and become a compulsive shopper, exerciser, hoarder, or begin compulsively cleaning. Recovery includes and must include what we do with our time. Many find abstinence from gambling by scheduling things to do like going to the gym, volunteering, joining a political or environmental group, meeting up with friends, even scheduling self care and meditation or artwork, and reviving or making new hobbies. One must be careful to do things in moderation to avoid cross addiction and careful of becoming addicted to doing things all the time. (Existing as a human doing instead of a human being.) Going to GA meeting(s) and or support group uses up some of the time.
Artwork of any kind relieved the anxiety I got when I first quit, even coloring in a coloring book could help me through an urge to gamble. Relaxation tapes also really helped. For me, I needed to do internal work to feel more loving toward myself, I got counseling, so that now I am comfortable alone and take better care of myself in terms of eating right, sleeping enough, having social contact and having alone time. I will seek a balance in all of that for the rest of my life.
I am more tuned in to world around me and to other people's feelings. I am more in tune to my own feelings throughout the day and more in tune with my body. Today I am grateful to be alive and feel blessed for the support network of friends and family that I have. (I did not feel this way when I was gambling- I was alone, busted and suicidal at the end of my gambling spree.)

Life throws stress-ors at us but I have learned I can cope with them without gambling and I am ahead in the long run.

EVERYTHING ELSE. Nothing else really matters when you are in action and life loses its true colors and luster. With the gambling gone your life will start over with the things that were once important to you and new discoveries that you never would have experienced if still in action. Withdrawal is tough but well worth the rewards that will make you feel like you are living again, not just chasing.

I often wondered the same thing. What will I do with myself? Now I wonder how I found the time to gamble at all. I suppose some of that time is taken up by a normal sleep pattern. I used to stay up all night then play 'catch up' when I could. I cook more. I used to eat more fast food than I should have - I just felt so tired and sick that I didn't feel like cooking. I spend more time reading, mostly to learn what went wrong with me along the way (because something did and I'm curious about it) and how to come to terms with it so I can move forward in a healthy way. I spend more time just resting. I feel like I need it and deserve it. Years of gambling and the motivation behind it put a great deal of stress on my body as well as my mind (I'm not young). I've taken a few mini-vacations, mostly to visit friends and family that I hadn't seen in a while. I have the time now and a small bit of funds to work with. Later, when my debt has been paid down, I plan to take some longer trips - there are so many places I'd like to go now that I have an interest in the world again. The time just got filled up (really fast) with other things that I'd always wanted to do but never got to.

Do what you enjoy and things that are healthy and positive. Being away from gambling you will begin to appreciate the little things in life again. But don't think that you always need to be doing something. It's good being busy but some downtime isn't bad. I used to think that when I quit I always had to be busy have things planned. I was getting burned out. Sometimes I just want to relax and not have everything planned out. Gambling hasn't been a healthy productive thing for you. No need to have it in your life.