Two different settings, in tournaments you know if you loose you are going home, so you you will give it your best , defensive play comes first; playing for money, is open ended, first few games are like playing for fun and go for everything, you say oh i will catch up, i got all night long, all of a sudden you are 5 or 6 down because you are playing someone who knows how to keep his winning.
Other poster saying subconscious (SC) is responsible for your shot making, i will give example here of subconscious moves, say you are driving a car and a car crossed a red light in front of you, your SC will get you to move away from it to save yourself regardless of who is sitting next to you, this is why behind the driver is the best seat in house. So SC is a hard core memory bank that is recalled in instances to save life, blink of an eye to save the eye, breathing, walking, involuntary body functions and instincts; now the actions involved in playing pool are different and actually all are trained conscious decisions that are saved in an erasable memory bank that gets called in when needed; sure it is quick, but no way near the SC recalling speed. Because it is conscious its efficiency depends on the state of mind which is heavily depends on many factors, what you eat, drink, sleep, exercise, happy mode, sad mode, give up mode...you name it. I am sure at times you play and your thoughts will be all out mean and not giving any chance to the other player, at times f**ed it who cares, so you will loose; unfortunately, it is hard to control; also do not ignore luck, sure it is big factor, dead balls, 9 ball missed and sits as a duck, cb kiss three balls and scratch..
If you depend on SC you will fail unless luck saves you. No substitute to learning all the 4000 shots possibilities to be master of the table and over come luck intervention. Best of luck.