Inside all of our minds is a caveman. This caveman does things to survive. He wants to get the highest caloric food to store for famine. He wants to rest and conserve energy for that mammoth he is going to have to spear tomorrow. He wants to procreate with whatever mate he can find because who knows if there will be a tomorrow.
This caveman does not know we are living in times of plenty.
This is why it is hard to reach your goals. You have to deny that inner caveman and the physical urges he can produce in your body. You have to say no I’m putting my future goals above my current discomfort. Whatever it might be: losing weight, gaining muscle, saving money, or learning a skill. He is there to tell us: I deserve this splurge, just one piece of cake, or wouldn’t it be easier just to sit here and watch an entire season of Lost on Netflix. Know that you can retrain your mind, and like everything else you do this by repeating the actions you want to be in your life.