Somatic threshold exercise. Find a room or corridor with space to walk. Lay a piece of string or a stick across the floor about a metre from one end, parallel to the wall. This line is your threshold. The small space beyond it is your life after the change — the unknown future. Where you're standing is the known, safe present.

Walk to the far end of the room. Turn and face the line. Concentrate on the change you've been considering — picture the actual moment of implementing it: the conversation with your boss, handing in the letter. Look at the space beyond the line. Notice what happens in your body.

Are you ready? If the answer is not yet — that's OK. Stay where you are without forcing it; revisit the exercises on fear and resistance and come back.

If something says yes or maybe, begin walking slowly toward the threshold. When you arrive, when you feel ready: take a breath, and cross over.

Celebrate. Then turn around and look back at the starting point, where a previous version of you was still hesitating.