Submitted by Naveen.N.R
This Works In Every Game In THE WORLD which has some missions.
If you find a mission in any game very very tough and have
tried a lot, stop playing that mission and play some other
modes in the game like freeplay or quick race or something
like that which you can complete easily or can even play some
chapters which you liked. Now after some two-three days if you
try the mission which you felt tough, you will find it not so.
Most probably you will complete it in two attempts.
Just try it out. It has worked in Every game I Have played
from GTA to NFS.