Give over thine own willing. Give over thine own running. Give over thine own desiring to know or be anything, and sink down to the seed which God chose in thy heart, and let that grow in thee, and be in thee, and breathe in thee, and act in thee, and thou shalt find by sweet experience that the Lord knows that, and loves and owns that, and will lead it to the inheritance of life, which is God's portion.
Having the faith to take life one piece at a time- to live it in the knowledge that there is something of God in this for me now, here, at this moment- is of the essence of happiness. It is not that God is a black box full of tests and trials and treats. It is that life is a step on the way to a God who goes the way with us. However far, however perilous.