He made up his mind to enjoy his guitar and to accumulate as many happy experiences as he could so that when he retired he would be able to look back on his life with satisfaction.
他下决心享受弹奏吉他，积累尽可能多的愉快经历，这样当他退休时，他将能够满意地回顾他的生活。
2
There must be something on his mind, he's been so quiet the whole morning.