Our effort in our practice should be directed from achievement to non-achievement. - Shunryu Suzuki

Our way is not to sit to acquire something; it is to express our true nature. That is our practice.

and you will become friendly with others. This is the merit of Zen practice. But the way of practice is just to be concentrated on your breathing with the right posture and with great, pure effort. This is how we practice Zen.

By purity we just mean things as they are. When something is added, that is impure. When something becomes dualistic, that is not pure. If you think you will get something from practicing zazen, already you are involved in impure practice. It is all right to say there is practice, and there is enlightenment, but we should not be caught by the statement. You should not be tainted by it. When you practice zazen, just practice zazen. If enlightenment comes, it just comes. We should not attach to the attainment. The true quality of zazen is always there, even if you are not aware of it, so forget all about what you think you may have gained from it. Just do it. The quality of zazen will express itself; then you will have it.