If I am not for myself, then who will be for me? But when I am for myself, then what am "I"? And if not now, when?

The beast that thou sawest was, and is not; and shall ascend out of the bottomless pit, and go into perdition: and they that dwell on the earth shall wonder, whose names were not written in the book of life from the foundation of the world, when they behold the beast that was, and is not, and yet is.

Keep working hard and you can get anything that you want. If God gave you the talent, you should go for it. But don't think it's going to be easy. It's hard!

And not only so, but we glory in tribulations also: knowing that tribulation worketh patience;

And to the woman were given two wings of a great eagle, that she might fly into the wilderness, into her place, where she is nourished for a time, and times, and half a time, from the face of the serpent.

Like your body your mind also gets tired so refresh it by wise sayings.