This is not really a proper post, but I'd like to leave a quotation here.
'Whatever else you may be doing, if you but fix your desire on God's sabbath rest, your prayer will be ceaseless.'
Quidquid aliud agas, si desideras illud sabbatum, non intermittis orare.
—St Augustine, Enarrationes in Psalmos, Ps. 37, n. 14: