Have you ever heard of accountability partners, anushka? That sounds similar to what you need, and I imagine a lot of therapists would be up for helping in this way.

You could, say, set a goal for next week, and agree to check in on your progress at the next session. Or you might agree that you will email every day to outline your progress on something. I don’t see why this would be any less acceptable than any other use of a therapist - I think it could be a very positive way of keeping yourself on track.