Here are some useful phrases that can be used to give advice:
If I were you, I’d + bare infinitive
A. I think I deserve a pay rise. I work so hard!
B. If I were you, I'd talk to your boss about it.
Have you considered + gerund …?
A. I'm so unfit.
B. Have you considered joining a gym?
Why not + bare infinitive ….?
A. After I've paid my rent and bills I haven't got any money left!
B. Why not look for a part-time job?
You could always + bare infinitive
A. I'm finding my lectures really difficult to understand.
B. You could always change your course.
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