I feel very uncomfortable with the advice given by HerRoyalNotness.
I think if prayer has any value it is in it's meditative quality.
As a form of quiet reflection on our troubles with a focal point formed by tradition and ritual.
Whilst attempting to sway another to your precise format of prayer may bolster your own faith, it strikes me that it could be interpreted as a blaming statement, along the lines of you were doing it wrong and thus don't deserve your prayers answered.
Which is factually, and morally, indefensible.
OP, if you feel prayer has not had a tangible effect on your life and you are not comforted by the process you not alone.
Lots of people, from all faiths, do not feel the benefit of personal religious ritual yet still appreciate communal acts of worship and the moral guidance that can be found in faith traditions.
And it's worth noting that the best evidence available indicates that prayer has no benefit in discrete outcomes.
For some, this doubt in a deity that answers prayer is the first step in leaving their faith.
These options are open to you.
I would echo the advice by previous posters to talk to your G.P.
I think that could be of benefit.