Cultivate good deeds for your Hereafter
Shaykh ibnu Uthaymeen said:
“The Worldly life (Dunya) is a place for cultivating (good deeds) for the Hereafter, and whosoever does not cultivate for his Hereafter has ruined it (i.e his dunya) and has ruined his Hereafter.”
Source: الضياء اللامع ٦٥/١
Translators Note: The one who ruins his worldly life is the one who fails to make use of it, by failing to do good deeds and having sound belief in accordance to the Qur’aan and Sunnah.