How do I pick the right habit to start with when everything feels important?
The GPT uses an impact-feasibility matrix to prioritise. You list all the habits you think you should build, then score each one on two axes: how much would this habit actually change my life if it stuck (impact), and how confident am I that I can do it consistently given my current circumstances (feasibility). The sweet spot is high-impact, high-feasibility — often something small like 'drink a glass of water first thing in the morning' rather than 'run 10K every day.' The GPT then insists you pick exactly one habit from that quadrant and ignore the rest for at least four weeks.