Wa alaykum assalamu warahmatullah,

In the Name of Allah, the All-Merciful, the Mercy-Giving

All praise is due to Allah alone; peace and blessings be upon Our Prophet Muhammad.

Thinking of death and being constantly mindful of the Hereafter are positive feelings that drive a Muslim to be cautious of committing sins and keen to please Allah SWT. There are numerous texts in the Quran and Sunnah that direct a Muslim to entertain this feeling. The Quran always reminds us that “Every [single] soul shall taste death. And you shall [all] be rendered in full your rewards on the Day of Resurrection.” (Aal `Imran 3:185) and that “All who are upon the earth shall pass away.” (Ar-Rahman 55:26) The Messenger of Allah (peace and blessings be upon him) said, “Sufficient is death as an admonisher.”

Hence, this is a blessing, brother, that you have this feeling and it should drive you to be a better Muslim and to prepare yourself for the day you will meet your Lord. Those who do not entertain this fear of death and are unmindful of the Hereafter become indulged in worldly pleasures and forget that day.

Allah knows best.