"If you follow your bliss, doors will open for you that wouldn't have opened for anyone else." - Joseph Campbell.
Know What You Want. Clarity is the key. You must have a clear idea of what you are asking for and why. You will only receive what you want to the extent that you were clear. What does your end result look like? You are the one in control when you ask the question you wish to ask. How will the person you are asking benefit from your "ask"? Think about it. If you created an "ask" based on a win-win relationship, why would the answer be no?
Believe, it is possible and you deserve it. If you do not ask with confidence and conviction, the person you are asking may wonder how important it would be to answer your question. How bad do you want it? You may want to role-play with a colleague or practice in the mirror before you ask. You are meant to be, do , and have great things in your life. You need to BELIEVE IT!
Go out and ask for what you want!