Well, I believe you don't need a new year just to change your ways. You can always do it anytime. Maybe people are just inspired to change because of the feeling of something new for the new year or growth.
Self-control will always be the same process, but the time you implement it will be different. Practice it often until it becomes a habit.
You don't necessarily need to change or have self control but I think you can change your approach to betting by betting on yourself on rollspace. That should give you a much better edge at winning than other alternatives.