Interesting topic! From my own experience you indeed lose everything by not making clear cut choices. But "sacrifice" means you already consider the project you

Interesting topic! From my own experience you indeed lose everything by not making clear cut choices. But "sacrifice" means you already consider the project you are giving up as a part of yourself. For me the best way to stay focused and in the same time not being frustrated is to set yourself deadlines on the projects you are on and avoid projecting yourself elsewhere until they are reached.