Dear Friends,
Many people keep asking me why they are not getting their heart’s desire, despite their prayers, recitation of mantras, rituals …
I have read (Swami Viditatmananda) that for the successful accomplishment of any undertaking, one needs to put in:

Endeavour,Even though God is omniscient, and knows what we desire, unlike other creatures God has blessed human beings with the gift of free will. This enables us to perform deliberate action (effort and prayer) and seek help from the Almighty.

The right Time
and
God’s Grace
Is required for the successful accomplishment of any undertaking.
Prayer is a means to win His Grace…a way of recognizing our vulnerability and examining ourselves…but even after one puts in all our heart into prayer, there is many a slip between the cup and the lip.
Sometimes God’s answer maybe:
No! It is not good for you, you need to learn your lesson that life is teaching you before you achieve your heart’s desire!
or God's answer may be
Later! I have something better in store for you when the right time comes!