That depends on you. Your phone is using 39% battery in almost 9 hours. If that's enough for you, and you can recharge after 9 hours, you're doing fine. If you need much more than 9 hours between charges you'll have to cut your usage somewhere - wjjether that's the app to uninstall is up to you, but it'll stop 18% of the 61% of battery used in 9 hours. That's almost 11% of battery drain.