Having had a ACL done myself I can empathise fully.
Do all your rehab as speced by a Physio. Dont be impatient with your progress, it will all fall into place. You are incharge of yourself, monitor all sessions by feel, any unusual pain or weakness , see you massage or physio person. Go to David Palmers Website or read Joe Shaws articles on this site and read the section on Affirmations to reprogram yourself and restore any hesitations to your game. Set goals and use the affirmations to help you attain them. All these are small steps, be happy you are playing the greatest game, the longest journey is commenced with the first step
All the best
David Mennie