If you approach a difficult problem without struggle, your ego will at first try to take charge from years of habit. Do the minimum and stand back. Solutions incubate at a deep level, not at the speed demanded by your mind. Take a break and come back the next day. Allow the answers to arise from your center, even if it takes a while. However much you have to retrain yourself in this practice of Least Effort, the ability to come from your center is worth the highest price anyone could pay.