In my opinion, dieting, whatever, needs professional guidance.

在我看来，节食，无论如何都需要专业的指导。

Look for professional guidance if it will help unite the family.

探求一些能够团结家庭的专业的指导。

Look for professional guidance if it will help unite the family.

寻求一些能够帮助团结家庭的专业性指导。

Most of us could do with some professional guidance on how to optimize our time.

我们大多数人在如何优化时间上可能需要一些职业指导。

If your anger is deeply rooted, you may need professional guidance to deal with it.

如果你的愤怒根深蒂固，你可能需要专业的辅导来处理它。