Small things everywhere lead to great ones.
Begin by fulfilling the commandment of fasting on Wednesdays and Fridays, or the tenth commandment relating to evil thoughts and desires, and you will eventually learn to fulfil all the commandments.
“He that is faithful in that which is least is faithful also in much” (Luke 16:10).
[…] Take the trouble to spend only one single day according to God’s commandments, and you will see yourself, you will feel by your own heart, how good it is to fulfil God’s will (and God’s will in relation to us is our life, our eternal blessedness).
Love God with all your heart at least as much as you love your father, your mother, and your benefactors. Value with all your strength His love and His benefits to you. Go over them mentally in your heart.
Think how He gave you existence and with it all good things, how endlessly long He bears with your sins, how endlessly He forgives you them for the sake of your hearty repentance…, what blessedness He has promised you in eternity, if you are faithful to Him.
Enumerate besides His mercies, which are endlessly great and manifold.
Furthermore, love every man as yourself – that is, do not wish him anything that you would not wish for yourself. Think, feel for him just as you would think and feel for your own self.
Do not wish to see in him anything that you do not wish to see in yourself. Do not let your memory keep in it any evil caused to you by others, in the same way as you would wish that the evil done by yourself should be forgotten by others.
Do not intentionally imagine either in yourself or in another anything guilty or impure. Believe others to be as well-intentioned as yourself, in general, if you do not see clearly that they are evilly disposed.
Do unto them as you would to yourself, or even do not do unto them as you would not do unto yourself, and then you will see what you will obtain in your heart – what peace, what blessedness!
You will be in paradise before reaching it – that is, before the paradise in heaven you will be in the paradise on earth.
“The kingdom of God is within you” (Luke 17:21), says the Lord. “He that dwelleth in love,” teaches the Apostle, “dwelleth in God and God in him” (1 John 4:16).
John of Kronstadt (1829-1908; Russian Orthodox): My Life in Christ, part 1, pp.33-35.