1.Did you spend too much time on chasing girls ?
2.Have you been thinking about making money for quite a while instead of concentrating on your study ?
If your answers to my questions are "yes", your attempt to mimimum those impacts on you caused by chasing girls or dreaming on making money will be wise.
Be careful to your realtionships with your parents and teachers. As the old Chinese adage said: Don't listen to the olders, you will lose someting right away !!!
What is your major now ?
Also, please write more of your personal information so that people will be much easier to give their advice to you. The more detail, the better.
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夫君子之行﹕靜以修身,儉以養德。非澹泊無以明志,非寧靜無以致遠。夫學須靜也,才須學也。非學無以廣才,非靜無以成學。慆慢則不能研精,險躁則不能理性。
年與時馳,意與日去, 遂成枯落, 多不接世。 悲守窮盧,將復何及﹗-------諸葛亮誡子書