One of the reasons we have the psalms is for those times when we know we should pray, but we don't know how.
During these times, it can help to simply read a scripture out loud. Psalm 119 is an excellent place to find those words when we don't have any for ourselves.
I have it below in both the NIV and then the Amplified versions.
"May my cry come before you, Lord;
give me understanding according to your word.
May my supplication come before you;
deliver me according to your promise.
May my lips overflow with praise,
for you teach me your decrees.
May my tongue sing of your word,
for all your commands are righteous.
May your hand be ready to help me,
for I have chosen your precepts.
I long for your salvation, Lord,
and your law gives me delight.
Let me live that I may praise you,
and may your laws sustain me." Psalm 119:169-175 (NIV)
Amplified.
Let my [mournful] cry come before You, O Lord;
Give me understanding [the ability to learn and a teachable heart] according to Your word [of promise].
Let my supplication come before You;
Deliver me according to Your word.
Let my lips speak praise [with thanksgiving],
For You teach me Your statutes.
Let my tongue sing [praise for the fulfillment] of Your word,
For all Your commandments are righteous.
Let Your hand be ready to help me,
For I have chosen Your precepts.
I long for Your salvation, O Lord,
And Your law is my delight.
Let my soul live that it may praise You,
And let Your ordinances help me."
