Music is a cure all for me. Find what you like and it can be inspirational, it can help you feel both good or bad (depending on mood), to me it is like an angel that will lift you and keep you going, giving you renewed vigor and hope!
In case you don't know where dreams come from, they start off as a pixel or a synapse in your brain if you will. Which develops into a thought changing to a desire. Desire is a fork with many tines one of which is envy and if that is the case, a thought driven by envy is not your dream it will end at desire. Envy never carries enough weight to carry you to the finish line. There are many tines on this fork that all are destined for envy and a few that are heading in the right direction and when a desire is driven by hope, hope will carry any amount of weight to the finish line so in my opinion hope is what drives a dream!
Now define the dream, break it down to the smallest of pieces and you will find that this dream takes work (if you are honest with yourself). You already understand this. If a desire takes work to accomplish how do you know how much you may ask? Simple, if it is truly a dream it simply takes all you have got! First off I don't know anybody who is truly happy, no amount of money can buy that for you. But a true dream with desire and a willingness to give it all you've got and tiny little movements towards it via hard work, that is happiness. If you cannot see that, then I would submit your dream is not a true dream. It ended at desire for some reason there are no obstacles that cannot be overcome if you truly desire something that so badly that you classify it as an obtainable dream (which all dreams are obtainable, unless were talking the kind when your sleeping). It is truly the journey to the dream that makes one happy and there are set backs and obstacles. However when you achieve something you desire so much that it hurts, it is time to start working towards the finish line. When you reach the finish line of your dream you will find only one thing! You did not dream big enough!
Wishing you well and don't be discouraged by set backs. If or better yet when set backs happen pick yourself up dust yourself off don't give it a thought and start working.
I have achieved my dreams! I found out that if you don't dream big enough the work stops. The achievement of the dream takes your happiness away.
So 
Then again what do I know, I am old and did not dream big enough.
Wishing you luck and continued success on reaching your dream wanted bad enough you will get it. DESIRE!
When I was a child I caught a fleeting glimpse
Out of the corner of my eye
I turned to look but it was gone
I cannot put my finger on it now
The child is grown
The dream is gone
I... have become comfortably numb
RE: On The Edge of a Broken Dream