Let a hobby change shape without assuming you have lost interest in it.

Interest rarely dies; it more often moves. The runner who starts walking, the cook who stops entertaining and makes the same three dishes well: each of these looks like decline from outside and feels like a natural adjustment from inside. Judging the new shape against the old one is what makes people quit entirely.

If something you love has changed, describe what you actually enjoy about it now rather than what you used to do. Then let the practice match that description. You may find the thing is still there in a different form, and that what you had lost was only the old picture of it.