what’s the most effective way to unlearn bad habits?

Unlearning bad habits usually takes more effort than building new ones because they’ve had time to get comfortable. most of the time it’s not about willpower but about rewiring triggers routines and rewards. the key is replacing the habit not just removing it. if you always scroll your phone before bed don’t just stop replace it with reading stretching or something that scratches the same itch. and sometimes the hardest part is being patient with yourself when you slip because that’s part of the process too. what actually works for people long-term?