Change is a skill. Practice small ones and the big ones stop looking so scary.

Being able to change is trainable, the same as anything else. Each small adjustment you actually carry out teaches you that a new arrangement is survivable, and the next one meets less resistance. People who find big change terrifying often have very little recent practice at small change. That is a shortage of reps rather than a flaw in character.

Change one low-stakes thing this week purely to keep the muscle working. A different route, an unfamiliar food, a seat on the other side of the room. It sounds trivial, and it is how bigger decisions stop looking impossible.