Thankfulness is the Cure against Frustration.
Try it!Whenever you feel frustrated abouy thinks not going your way,be thankful for the chalenging time,which is a chance for personal development.Turn it anyway you want it,but be thankful!
Then horizons you never knew that they even existed will open up.
Even better when you can be thankful without looking out for rewards of any kind,in this case you go in direction of real liberation from sense desires.
Once you got this hurdle behind you, happiness appears.