Name what you want more of.
Start with a quality of daily life rather than a grand destination. More creativity, more company, more independence, or more time outdoors are workable starting points. Choose one and describe what an ordinary Tuesday with a little more of it would look like.
Choose an experiment you can undo.
A single class is an experiment; a year-long commitment is a different decision. A conversation with someone in another field is an experiment; leaving your job immediately is not required. Make the first step small enough to give you information without creating a large new burden.
You do not need the whole map to take the next useful step.
Put the step in the calendar.
Give the experiment a place, a time, and a modest finish line. “Spend twenty minutes finding a local pottery class on Thursday” is more actionable than “become a creative person.” Then decide how you will know whether you want to try again.
Use support when it is useful.
A friend, an accountability partner, or a coach can help you think aloud and follow through. Be clear about what kind of support you want. A useful conversation helps you make your own decisions; it does not need to sell you a new identity.
Pick one idea you would actually enjoy trying. Give it a little time and a little room.