How can i cope with panic and sadness?

Together, these: might signal depression, which is treatable by either a psychologist or psychiatrist. What are the causes? How long have the symptoms persisted? On the behavior side, learn to relax, meditate, do yoga, exercise. Try therapy. Severe cases benefit from medication support. Here's a reference for the anxiety part: http://www.psychologyproductsandservices.com/page2.html

DEPRESSION/PANIC: Get an evaluation from a psychiatrist to help identify what depression/panic means to you and whatever else may be bothering you. Consider recommendations for medication if any are given. Get a referral for a reputable psychotherapist to speak with. Meds and therapy combined are most optimal; no just one or the other.

Be Mindful: Sadness and panic can be debilitating. But, it usually does not last forever (though it might seem like it does). If you aren't already seeing a psychologist or psychiatrist you might schedule an appointment to get things checked out. In the meantime practice being mindful and patient. Deep breaths. Calm.