I'm really tired. I'm not sleeping well at the moment.
You should see a doctor / count sheep / take a sleeping pill / relax.
My knee really hurts.
You should see a doctor / have therapy / put your foot up / put a bandage on it.
I'm really worried about my exams.
You should talk to your teacher / do more revision.
I'm really unfit.
You should join a gym / do exercise / go jogging.
My parents don't give me enough money.
You should get a part-time job.
I feel quite depressed for some reason.
You should see a psychiatrist / talk about it with friends.