Map the first week
List the evenings most connected to alcohol, what usually happens before the first drink, and one replacement you can reach quickly.
Expect the cue, not a motivation failure
The old routine will still appear. Decide in advance how you will leave, delay, replace, or ask for support when it does.
Safety comes before a streak
If you have severe or current withdrawal symptoms, a self-guided challenge is not the right next step. Seek urgent professional help.