Confused

I am getting very confused recently. Don't know what's wrong with me leh. Sometimes I really don't know the things I do are right or wrong. I am worried that one day I might regret on the many decisions I made recently. I wonder why we have to make so many difficult decisions in life. Why can't we just live each day happily and don't have to worry so much. Well, jus to share the chorus of a song that I like:

其实还爱你
其实我非常爱
你不想失去你
难道我没有权利
说我不愿意
你给了他的吻
虽然却只有一吻
可知道我渴望抓到你的心
我知道他很爱你
你怕他伤心
我每天假装开心
害怕你离去
可不可以任性
求求你不要去
总在我心里最后一句
其实很爱你.