We should fix ourselves ...

We should fix ourselves firmly in the presence of God by conversing all the time with Him...we should feed our soul with a lofty conception of God and from that derive great joy in being his. We should put life in our faith. We should give ourselves utterly to God in pure abandonment, in temporal and spiritual matters alike, and find contentment in the doing of His will,whether he takes us through sufferings or consolations.
 Brother Lawrence

Quotes from the same author

I have abandoned all particular forms of devotion, all prayer techniques. My only prayer practice is attention. I carry on a habitual, silent, and secret conversation with God that fills me with overwhelming joy.
 Brother Lawrence
A little lifting of the heart suffices; a little remembrance of God, one act of inward worship are prayers which, however short, are nevertheless acceptable to God.
 Brother Lawrence
Lift up your hearts to Him, sometimes even at your meals, and when you are in company; the least little remembrance will always be acceptable to Him. You need not cry very loud; He is nearer to us than we are aware.
 Brother Lawrence
A little lifting up of the heart suffices; a little remembrance of God, an interior act of adoration, even though made on the march and with sword in hand, are prayers which, short though they may be, are nevertheless very pleasing to God, and far from making a soldier lose his courage on the most dangerous occasions, bolster it. Let him then think of God as much as possible so that he will gradually become accustomed to this little but holy exercise; no one will notice it and nothing is easier than to repeat often during the day these little acts of interior adoration.
 Brother Lawrence
One way to recollect the mind easily in the time of prayer, and preserve it more in tranquillity, is not to let it wander too far at other times. You should keep it strictly in the presence of God; and being accustomed to think of Him often, you will find it easy to keep your mind calm in the time of prayer, or at least to recall it from its wanderings.
 Brother Lawrence