Das Laecheln, dass du aussendest kommt immer wieder zurueck. - The smile you are giving is always coming back to you. (indian proverbs)

I believe whatever you do, do it with a smile or don't do it at all. Life is too short to be upset about it. If you are struggling on something work on it, don't waste your time in complaining about. Only the ones who work hard, succeed. It might take some sacrifices but it will be worth it in the end.