We couldn't be debilitated because of working for several years.

我们不会因为只辛苦工作几年就变得疲惫不堪。

After working for several years and after earning for myself enough bread , I will start a project that I want to travel around the world.

经过多年的工作，为自己挣足够的面包后，我将开始一个项目，我想环游世界。