Every moment in life is a prayer, or could be. I think you can pray yourself into the mystery of the moment, or allow for the blessings of the moment to sustain you. Every moment is an invitation, and whatever you do in that moment, if it's dedicated to God, then it is a prayer.
Spiritual self-esteem is gained from knowing that our work is a contribution and a blessing. Then we perform for the love of God with no thought of personal recognition... When our motivatlon for work is valid, the work will be spontaneous and creative.