In chapter 12 Arjuna asks whether the worshipper of the form or of the unmanifest is better; the Lord says that the one who fixes his mind on Him and worships with faith is best (12.1-5).
Chapter 12 opens with Arjuna asking whether the devotee of the Lord with form or the seeker of the unmanifest knows yoga best; the Lord names the one who fixes the mind on him with faith, and says the unmanifest path also reaches him but is harder for embodied beings (12.1-5).
Chapter 12 gives a step for every state of mind: fix the mind on the Lord if it will stay, practise if it will not, work for him if that is hard, and give up the grip on the result if nothing else works.