The day your sins will be less, you will see that your mind is full of endless peace. It will be very light, the focus will be on worship, the mind will be at work. But the day you commit more sins, you will see that you are not getting peace in any work. There will be a deficit in your worship, there will be less attention in worship.

Allah created us. He has designed and programmed us in such a way that our life will not be easy if we do not follow his manual (Qur'an, Hadith). The effects of sin fall directly on us. The heart becomes dark because of sin. He sows despair and sorrow in his dark heart. On the other hand, there is indescribable peace in the heart that is cleansed in the water of repentance.

So if the blessings in your life diminish, if you are not interested in worship, the mind feels heavy, check what sin you are doing. Repent from that sin, and return to Allah . You will feel the change yourself.