If you want to increase your focus, if you want to get things done, do not waste your time on things that you cannot do. Instead, according to Charles Kingsley, “Do to-day’s duty, fight to-day’s temptation; and do not weaken and distract yourself by looking torward to things which you cannot see, and could not understand if you saw them.”
Yes, whatever you are doing right now, small or big, take it very seriously. That is where your future is. Do not worry about the future. If you do your today’s tasks really well, tomorrow will take care of itself.