When we deal with people or things, the most difficult part is to insist. If we want to know the person more clearly, we have to spend more time with him in order to know his habit and character in detail. But, since our time in life is limited, we cannot know every person we wish to know.
In such case, we must have wisdom to decide which person we should know and which not. In our life, we need friends without whom we cannot live our life smoothly. It is our prime duty to select good persons as our friends. If we select awful person as our friend, we will surely suffer in one way or another.
As to the things we wish to do, we must have a clear principle that once we have started to do something which we think is useful to us, we must persist, never to give up half way. Or we had better not to start from very beginning. If we start things without deep consideration and stop half way due to difficulty, our loss will be great, especially the time wholly wasted.
We have only twenty four hours a day and it is important to select that we only do most important things and less imported things should be cast aside.
Your success is entirely depending upon how you use your time to the things which will bring you fruit or you just work for something aimlessly, and you achieve no result at all.