Asalamualykum brother,
I have read quite a few of your posts & Alhamdulilah you give excellent advice.
It’s very normal for our emaan to go up and down so please don’t feel alone. After all we only human beings and we constantly need reminders.
Instead of sticking to your routine daily prayers and acts of worship why not try something different to spark your emaan again? For example if you read a lot of Islamic books why not visit an Islamic conference where you are surrounded by like-minded people. As well as learning something you may be introduced to another brother who has more Islamic knowledge and may inspire you and encourage you?
You
must evaluate where you are in life and what has decreased your emaan…By learning about the things that affect your emaan you are able to either avoid or learn how to manage that situation.
The below advice may help you insha Allah:
If you wish to read more please visist:
https://www.kalamullah.com/emaan.html
Ibn al-Jawzee said: "Being well-versed with evil embodies an alertness against falling into it." [Talbees lblees, page 4 and see al-Fataawa of Ibn Taymiyyah, 10/301 and onwards]
Thus, learning the causes behind the decrease of eemaan and being aware of the factors that weaken it and of how to safeguard one's self from them is a vital matter, which must be looked at. In fact, gaining knowledge of these causes is no less important than learning the causes for the increase of eemaan.
Before I begin to mention and shed light on the causes for the decrease of eemaan, I would like to point out that the non-maintenance of the causes of the increase of eemaan, neglecting to strengthen it and paying no regard to this, is deemed in itself a cause from the causes that decrease eemaan.
To therefore disregard the aforementioned issues and not pay any attention to them, weakens and decreases the eemaan. So just as their preservation is a cause for increase, in like manner, their disregard is a cause for decrease.
Shaykh Muhammad al-'Uthaymeen states: "As for the decrease of eemaan, it has many reasons..." he then them mentioned a number of points, from them:
"Abandoning obedience, for eemaan decreases as a result of this. This decrease will be proportional to the significance of the particular act of obedience; the more significant and emphasized it is, the greater will be the decrease resulting from not performing it. It maybe that eemaan vanishes in its entirety, like in the abandonment of prayer." [Fath Rabb al-Barittah, page 66]
This is shown by the saying of Allaah:
"Indeed, he succeeds, who purifies it (i.e., his soul). And indeed, he fails, who corrupts it." [Soorah ash-Shams (91): 9-10]
This noble Qur'aanic text signifies the importance of obedience and its preservation and that it is one of the greatest reasons for the purification of the soul. In sharp contrast, it also indicates the danger of neglecting obedience and of falling into disobedience and that it is one of the greatest reasons for failure and loss.
Ibn Jareer at-Tabaree, may Allaah have mercy upon him, mentions in his Tafseer.
"His saying,
"Indeed, he succeeds who purifies it". Allaah says that indeed, he succeeds who purifies his soul; so he greatly purified his soul from kufr and disobedience and he rectified it through righteous actions ..." [Tafseer at-Tabaree, 15/211-212]
At-Tabaree than related some accounts from the Salaf that support this: He related from Qataadah, ‘Whoever works good, purifies it with obedience to Allaah.’ He also related from him, ‘Indeed, he succeeds, who purifies his soul with righteous actions.’
He related from Ibn Zayd that he said, ‘He succeeds, whom Allaah has purified his soul.’
He related from Mujaahid, Sa'eed Ibn Jubayr and 'Ikrimah,
"Indeed, he succeeds who purifies it." They said: "whoever rectifies it."
May Allah swt protect you from all evil Ameen.