Count your blessings instead of focusing on all the bad things going on in your life. Be positive. Choose happiness. Sometimes we spend too much time complaining, and while that is completely normal, it also drains us. Everyone has problems, some bigger than others, but all important nonetheless. However, how we handle our challenges is what matters. That is what will 'make or break' us. Either we see them through and learn from them, grow as human beings, or we let those problems over-power us, beat us.
Take a step back. Breathe. Re-evaluate the situation and see how you can make the best of what you have. Don't focus on the bad, but rather realize, you have more GOOD in your life.
Count your BLESSINGS.