Make a monthly habit tracker in a minute: pick the month, list your habits, set a goal for each and the reward you get when you hit it. Then print it. Free, no sign-up, saved in this browser.
A tracker shows you a streak, and for many people that's enough for a couple of weeks. A reward gives the month a finish line. Pick a goal you can reach on a normal month, like 20 days out of 30, not a perfect month: one bad week shouldn't make the reward impossible.
Habit Rewards is the app version of this sheet, for iPhone and Android. You tick off habits on a grid, each one pays coins, and you spend the coins on rewards you set yourself. It also keeps your streaks and sends reminders. More ideas in how to make a reward chart for adults and our dopamine menu builder.