Well.... guys, let me tell you a story. A long long time ago...
lol...no no no...wrong story... 
Okay here goes. A glass of water weighs about 300 grams. 300 grams?
That's not much right? You can easily use your baby pinky and hold
it. But
If you hold the glass of water continuously using your hand for 10
minutes, you will fill uncomfortable.
If you hold it for half an hour, your hand will start to
ache.
If you hold it for 2 hours, you wil probably need to see the doctor
after that.
If you hold it for a day, you will need to call the
ambulance.
The thing that i want to say is simple.At certain times, when we
get tired from carrying the burden on us, we feel like giving up
and throwing it away. What we need to do is to occasionally put
down the burden, and renew our strength and by His grace, pick it
up and move along the christian journey again. So when is the last
time when you had a refreshing touch from God? 
Isaiah 40:28
"They that wait upon the Lord shall renew their strength, they
shall mount up with wings like eagles. They shall walk and not be
weary, they will run and not faint"