Wise King Solomon was sitting one day, probably sitting on his rooftop in the resplendence of his royalty. Flanked by his beautiful wives about 300 of them. Reflected on his promiscuity of his youth I guess and wrote the songs of Solomon.
I didn't witness the write-up but study overtime has led me to answering prevalent questions about life as a youth. His wisdom was so profound that if his teachings are applied, a young man of this generation can be properly guided in making life choices ranging from career to family and relationships and friendships. 
I'd be outlining one guide to for a young man from one of his guides in The biblical book of Ecclesiastes.
Dear Reader, "rejoice in your youth, follow the impulses of your heart and the desires of your eyes. Yet know that God will bring you to judgment for all these things. So, remove grief and anger from your heart and put away pain from your body, because childhood and the prime of life are fleeting."
While you're young, take pride in the strength of your youth and do the things you love doing. There's no fun in trying to enjoy life when you're aged and the prime of your life is fleeting.
Take that step today, do that business, write that song, feed your focus, tame your fears, talk to that lady, pursue that career, preach your belief to as many as care to listen and be awesome. 
REMEMBER YOOU'VE ONLY GOT ONE LIFE TO LIVE.. THEREFORE carpe diem
If you carpe diem, once might just be enough
contributed by @joecxt