Grace In Trials

Today I've gone to The Valley of Vision, a collection of puritan prayers.  It's something I tend to do when I'm in a low place.  

Father of Mercies,
Hear me for Jesus' sake.
I am sinful even in my closest walk 
     with thee;
   it is of thy mercy I died not long ago;
Thy grace has given me faith in the cross 
   by which thou hast reconciled thyself to me
     and me to thee,
   drawing me by thy great love,
   reckoning me as innocent in Christ thought 
     guilty in myself.
Giver of all graces,
I look to thee for strength to maintain them in me,
   for it is hard to practice what I believe.
Strengthen me against temptations.  
My heart is an unexhausted fountain of sin,
   a river of corruption since childhood days,
   flowing on in every pattern of behaviour;
Thou hast disarmed me of the means
     in which I trusted,
   and I have no strength but in thee.
Thou alone canst hold back my evil ways,
   but without thy grace to sustain me I fall.
Satan's darts quickly inflame me,
   and the shield that should quench them
     easily drops from my hand:
Empower me against his wiles and assaults.
Keep me sensible of my weakness,
   and of my dependence upon thy strength.
Let every trial teach me more of thy peace,
   more of thy love.
The Holy Spirit is given to increase thy graces,
   and I cannot preserve or improve them
     unless he works continually in me.
May he confirm my trust in thy promised help,
   and let me walk humbly in dependence
     upon thee,
for Jesus' sake.