I can! I know I can! and today I am!

The distance between *can* and *am* is where most things live. A guitar stands in the corner of a great many houses, owned by people who could genuinely learn to play it and are correct to believe so.

Capability is not in short supply. What is scarce is the specific half hour, on a specific day, with the door shut.

Belief has already done its job here. It got you as far as thinking it's possible.

The rest is scheduling. Put the thing in a slot today with a start time, and let the sentence catch up to the calendar.