How are your practice habits?  Are your expectations for your game in line with your practice habits & efficiency and frequency of practice?  “Productive practice is about how present you can stay with your intention and is measured in the quality of the experience…” (The Game Before the Game, Nilsson & Marriott).  Choose an intention for your next practice session and observe how well you can stay with that intention the entire time.  If your attention strays, without judgement simply bring yourself back to the intention you chose for that session.   Increased concentration in practice may just lead to increased concentration on the golf course!