I'm a firm believer in plans.
I went in so many times just vowing to try harder...yet I never seemed prepared for the various things that can come up to challenge us or trip us up.
I really recommend you think about some of the things that have tripped you up the past and think about how you could have handled them better.
Find more support too - the more support you have the easier the rough times will be....and be prepared to make whatever changes you need to make in your life to stay sober.
Thinking about all these things now can save you being ambushed later
D