He had no opinions of his own but simply follow the herd.

他从无主见,只是人云亦云.

Don’t follow the herd. Do what is best for you and your situation.

做对自己和自己的处境有利的事儿。

One cannot make a dime unless follow the herd or trend most of the time.

不在大多数时间追随趋势，你是不可能赚钱的。