Do not focus soley on what you're asking for from God, but also remember to be grateful to Him for everything you already have (life, a soul, etc). In addition, you must examine your commitment to Him - are you following His Word? An obedient servant is more likely to receive a positive outcome from prayer.
Lastly, remember that the answer received is not always the answer that WE want, but we have to remember that God sees all and knows what's best for us.
Thank you and Shalom!
