One thing that I often find useful in my own devotion times is to take other people's prayers and use them or bits of them for myself. Of particular use to me has been a really delightful collection of puritan prayers called "The Valley of Vision" which I highly recommend to you. I have found it of use myself as I continue my fight against letting my prayers become nothing more than a dull repetition of requests. Below is a prayer concerning the Christian life.
Humility in Service:
I humble myself for faculties misused,
I repent of my folly and inconsiderate ways,
my broken resolutions, untrue service,
my backsliding steps,
my vain thoughts.
O bury my sins in the ocean of Jesus' blood
and let no evil result from my fretful temper,
unseemly behavior, provoking pettiness.
If by unkindness I have wounded or hurt another,
do thou pour in the balm of heavenly consolation;
If I have turned coldly from need, misery, grief,
do not in anger forsake me:
If I have withheld relief from penury and pain,
do not withhold thy gracious bounty from me.
If I have shunned those who have offended me,
keep open the door of thy heart to my need.
Fill me with an over-flowing ocean of compassion,
the reign of love my motive,
the law of love my rule.
O thou God of all grace, make me more thankful,
Inspire me with a deep sense of my unworthiness arising from
the depravity of my nature, my omitted duties,
my unimproved advantages, thy commands violated by me.
With all my calls to gratitude and joy may I remember that I have reason fro sorrow and humiliation;
O give me repentance unto life:
Cement my oneness with my blessed Lord,
that faith may adhere to him more immovably,
that love may entwine itself round him more tightly,
that his Spirit may pervade every fibre of my being.
Then send me out to make him known to my fellow-men.
Thomas van den Broek