Commitment Extends Beyond Wanting
Wanting is a poor long-term storage system for commitment. Desire changes. Energy changes. Interest changes. A promise that exists only while we feel like keeping it is closer to a preference than a commitment.
That does not mean commitment requires endless persistence at any cost. Capacity can change. Circumstances can make a promise impossible, unsafe, or no longer legitimate. Commitments can also be renegotiated honestly.
The distinction is narrower. Not wanting to do the work today is not automatically the same as being unable to continue or having a sound reason to end the promise. A serious commitment creates action across periods in which motivation is absent. That is why routines, structures, calendars, collaborators, and explicit promises matter. They keep the commitment available when desire is temporarily elsewhere.
Wanting may begin a commitment. It does not have to be what keeps it alive.