When you don't have a good sleep, you wake up grumpy and not in the mood. For me, it is very important to get the sleep that my body needs. Having enough sleep also promotes healthy lifestyle.
There are many reasons why people cannot sleep at all. Stress is one of them. When you are stressed, your mind tends to wander thus sleep is somehow impossible. Another factor why you can't sleep is your uncomfortable bed. What makes bed uncomfortable is the bad mattress. So, check your bed now and be sure you have the best foam mattress.