In life, we experience something amazing that makes us feel compelled to come closer to Allah, where we feel a sense of iman-rush. But after a while, dunya gets to us and our reality check makes us feel that we cannot be spiritual consistently. Here’s a tip on how to remain consistently on the path towards the pleasure of Allah.
We know that fardh ibadahs are mandatory and we are required to exert our utmost effort to fulfil those obligations. Unfortunately when it comes to voluntarily ibadahs (eg. nawafil prayers, optionals fasting, qiyamulail, etc.), most of us tend to take them lightly. When we miss one of our voluntarily ibadah, we say “Oh well, it’s only sunnah anyway.” But look how serious Rasulallah sallallahu ‘alaihi wasallam took his voluntarily ibadah:
When Rasulallah sallallahu ‘alaihi wasallam did not pray at night
because he was prevented from doing so by sleep (i.e. sleep overwhelmed him)
or by pain, he would pray 12 rak’ahs during the day. 
‘A’isha r.a. reported that when Rasulallah sallallahu ‘alaihi wasallam
missed the night prayer due to pain or any other reason,
he observed 12 rak’ahs during the daytime. 
To explain the above 2 ahadith, Rasulallah sallallahu ‘alaihi wasallam would always pray Witr with 11 rak’ahs. But if he sallallahu ‘alaihi wasallam was prevented from it due to sickness or sleep, he would pray them the next day during the daytime with 12 rak’ahs. This was his sallallahu ‘alaihi wasallam zeal in regard to his ibadah, and this is the Sunnah that we should all strive to follow.
Let’s ponder on the following hadith:
‘Umar bin Al-Khattab (r.a.) reported
that Rasulallah sallallahu ‘alaihi wasallam said:
“Anyone who sleeps through his hizb, or a part of it,
should recite it between the Fajr prayer and the Zuhr prayer.
It will be written for him as if he had recited it in the night.” 
The hadith teaches us that if we fail to recite the portion of the Qur’an that we intended to recite that night, whether inside or outside our prayer, because we fell asleep – then we should still recite it on the next day between the Fajr prayer and Zuhr prayer. Because by the mercy of Allah s.w.t., this deed will still be written as if we had recited it during the night! Therefore if we fall asleep before we could finish the recitation of Surah Al-Mulk, the 3 Qul, and Ayatul Kursi, then we can make it up on the next day and still earn the rewards – alhamdulillah!
The hadith also points out something very important, that a time has been specified i.e. between Fajr and Zuhr. Therefore one of the things that we can derive from this is: Do not procrastinate! Make up those ibadah that we missed immediately before Zuhr.
This is a practical concept that we can do, insya Allah. So if we were to miss something because we overslept or got sick, the Sunnah encouraged us to still make it up. This will also help us to maintain our consistency and spiritual growth.