It happens that we do not feel a connection to Allah. There are a few reasons why this happens. The first one is the sins which we do not repent for. Those sins create a crust over your heart and and you cannot connect to Allah.

 In our daily adhkar we make istighfar. Seeking forgiveness for your sins is taking a bath for your heart! You constantly have to keep your heart clean. There is a dua which the Prophet (saw) said was the best to use to seek forgiveness. 

If one says this dua in the evening and they die before the morning they will enter jannah, and if one says this dua in the morning and they die before the evening they will enter jannah! 
The dua is 

‘Allahumma anta Rabbi la ilaha illa anta, Khalaqtani wa ana ‘Abduka, wa ana ‘ala ‘ahdika wa wa‘dika mastata‘tu, a‘udhu bika min sharri ma sana‘tu, abu-u laka bini‘matika ‘alaiya, wa abu-u laka bidhanbi faghfirli, fa-innahu la yaghfirudhunuba illa anta.”  

اللّٰهُمَّ أَنْتَ رَبِّي، لَا إِلٰهَ إِلَّا أَنْتَ، خَلَقْتَنِيْ وَأَنَا عَبْدُكَ، وَأَنَا عَلَى عَهْدِكَ وَوَعْدِكَ مَا اسْتَطَعْتُ، أَعُوْذُ بِكَ مِنْ شَرِّ مَا صَنَعْتُ، أَبُوءُ لَكَ بِنِعْمَتِكَ عَلَىَّ وَأَبُوءُ لَكَ بِذَنْبِيْ، فَاغْفِرْ لِيْ، فَإِنَّهُ لَا يَغْفِرُ الذُّنُوْبَ إِلَّاأَنْتَ