“O son of Adam!”

One of the Salaf said,  “O son of Adam! You need your share in this life, but need your share in the Hereafter even more. If you took care of your share in this life, then you will lose your share in the Hereafter and are soon bound to lose your share in this life too. If you took care of your share in the Hereafter, you will also win your full share in this life with ease.”
[Fada’il adh Dhikr by ibn al Jawzi p. 19]