Don't lower your expectations to meet your performance. Raise your level of performance to meet your expectations. Expect the best of yourself, and then do what is necessary to make it a reality.
It doesn't matter how much you want. What really matters is how much you want it. The extent and complexity of the problem does not matter was much as does the willingness to solve it.
Make it a habit to tell people thank you. To express your appreciation, sincerely and without the expectation of anything in return. Truly appreciate those around you, and you'll soon find many others around you. Truly appreciate life, and you'll find that you have more of it.
The keys to patience are acceptance and faith. Accept things as they are, and look realistically at the world around you. Have faith in yourself and in the direction you have chosen.
What if you gave someone a gift, and they neglected to thank you for it - would you be likely to give them another? Life is the same way. In order to attract more of the blessings that life has to offer, you must truly appreciate what you already have.
When was the last time you spent a quiet moment just doing nothing - just sitting and looking at the sea, or watching the wind blowing the tree limbs, or waves rippling on a pond, a flickering candle or children playing in the park?
You've done it before and you can do it now. See the positive possibilities. Redirect the substantial energy of your frustration and turn it into positive, effective, unstoppable determination.