Maybe you can't make the whole body comfortable, but make at least part of the body comfortable and stay with that part. As for the pains, let them b… - Ṭhānissaro Bhikkhu

You let go of the grosser forms of happiness, the grosser strategies for happiness, and get used to more and more refined ones. And they finally take you to the point where there’s no course left but to let go of strategies. All strategies. It’s like painting yourself into a corner. The only way to get out of the corner is not to be anywhere. When you can manage that, you see that what the Buddha taught was right. He really knew what he was talking about. This is the way to true happiness.

This is the basic trick in getting the mind to settle down in the present moment — you've got to give it something that it likes to stay with. If it's here against its will, it's going to be like a balloon you push under the water. As long as your hand has a good grasp on the balloon, it's not going to pop up, but as soon as you slip a little bit, the balloon pops up out of the water. If the mind is forced to stay on an object that it really finds unpleasant, it's not going to stay. As soon as your mindfulness slips just a little bit, it's gone.

Sometimes you hear the idea that the ego is so corrupt that anything it tries to do is going to be corrupted as well. That idea closes off all the doors except for one: the hope that somebody is going to come along and save you. But that hope is irresponsible. The responsible attitude is that you’re responsible for the actions of your mind. You really can choose. And fortunately your motives are not always corrupt. As the Buddha said, you can take advantage of the fact that you want true happiness, and develop some noble qualities out of that. The qualities of purity, compassion, and wisdom come from taking your desire for true happiness seriously.