:wasalamex
I think i know what you mean.. one of the reasons why this might be is because you experienced emaan [faith] at the beginning and you liked that, but later on things just got repetitive so your emotions stopped - because things don't seem that interesting no more.
Maybe this might have been because you blocked your emotions out because you was scared that your past emotions will make you want to go back to the old ways again, or that spark of emaan that you had in the beginning has died out because you feel that you doing the same thing over and over again.
The first thing you gota realise is that alot of people do say that songs have changed their life and they used to feel a high when they used to listen to them. Everything seemed dramatic and since they've stopped, things have gone more quieter, their life's become more less dramatic in a way.
The thing that I can say is that people have experienced the same, and what made them have that stronger sense of emaan again was that they started trying to do the things which sparked their emaan off in the first place at the beginning. So because I found it interesting to read stories of the prophets, i would read lives of other pious people who followed their way. If i heard
audio lectures about islaam, i would try learning in another way - so maybe through watching islamic videos instead.
The main thing to do is to start learning again, because a person usually gets that feeling when they've stopped learning for some reason.. so their emotions go down either because they've stopped, or they've done it too much, so they become bored because they've become too used to it.
That's why doing lots of other activities related to Islaam make the person feel that continous high feeling in their emaan. You see how in the life of the Messenger of Allaah (sal Allaahu alayhi waSalam) and his companions, Allaah destined that whenever something happens, another situation will come suddenly after it. So for example, just when the muslims won the battle of Badr, when they returned - the daughter of the Messenger of Allaah had just passed away. Or just when the Messenger of Allaah's wife Khadija passes away, soon after that the Messenger of Allaah is abused in Al-Taa'if.
You see how the events change all of a sudden so quick for them, and because their actually living the Qur'an and Sunnah - they feel the emotion, whereas when we simply just listen to lectures - its not exactly the same as living it.. so we might just switch it off. So what we have to do is live islaam, so when you learn something - tell yourself that you'll benefit atleast one mate of yours with that knowledge.
Give yourself targets. This will keep you focused insha'Allaah. So when you learn, you still have the duty of passing that knowledge on.
Study the biography of the lives of the Prophet's, and the companions [male or female.] And work hard to change one thing about yourself per day, so you can be like them.
Read an aayah (verse) from Qur'an and try to see if you can memorise one verse per day.
Find a hadith and see if you can implement it in your life, one a week.
You see how all this is practical? You get the knowledge, practise it, pass it on, which shows that you're dedicated and sincere for the sake of Allaah. This is the way of the companions. And if you make targets for yourself, then you strive to do better than doing nothing at all. It will keep you busy and you'll have new activities everytime so you don't get bored.
Also remember that the more longer lasting and stronger your contact with Allaah, the stronger your emaan will stay. So work hard to gain that by continuously asking Allaah for help through whatever you do.
A good dua' from the sunnah is:
Ya Muqalib al Qulub thabit Qalbi 'ala Deenek
[Oh Turner of hearts, turn my heart towards Your religion.]
more dua's from sunnah:
http://makedua.com/
And Allaah knows best.
:salamext: