Life is constantly pushing us to worship it, and if we do not fight back through worshiping Allah, we will end up as its slaves
Even if you have been a great Muslim for the past 12 months and you have created a great relationship between you and Allah, if you suddenly stop trying, everything will go back to normal, you will lose your spiritual peace and will feel rejected by Allah again.
That's because there is no way in this life to reach a certain point of iman (faith) and stay there without working hard. There is no stability. Every moment of our lives we are either gaining iman or losing it.
Faith in Allah is like the charge of a laptop battery. We are recharging our iman whenever we are worshiping Allah with attention and sincerity, and we are losing charge whenever we are doing anything other than remembering Allah. Some activities drain our iman faster than others. But regardless, it is constantly getting drained except for those moments when we are remembering and worshiping Allah.
The reason is that iman is not the natural state of existence on earth. What's natural is to be controlled by life, to complain, to get upset, to love money, to need people's attention and support. Life is constantly pushing us to worship it, and if we do not fight back through worshiping Allah, we will end up as its slaves, lost in its darknesses and disconnected from Allah.