Sometimes when people don’t want to suffer a little, they end up suffering a lot! Siach Sarfey Kodesh I, 6
When you just can’t fall asleep, it’s no use trying to force yourself to sleep. The more you try to force yourself, the more sleep will elude you. The same applies to many other things: it is not good to force yourself too much, because the more you try to force yourself, the stronger the opposing forces will become.
When something can be done today don’t leave it for tomorrow, because the world never stops for a moment. Who knows what obstacles you may face from the outside and from within if you leave it until later? But at times you may see that despite all your efforts and determination you simply cannot achieve what you want. Sometimes you must simply wait. Don’t be discouraged because you are not achieving what you want. Don’t let this push you off course. You must wait a little until the time is ripe.
Greenbaum, Avraham. The Essential Rabbi Nachman (p. 82).