Every action can either bring us closer to Allah ﷻ or take us further away from Him. A true believer is vigilant over their heart and protects it from becoming sealed from belief and awareness of Allah ﷻ. There are three actions one can engage in to become vigilant over the heart. First of all, we must always follow a bad deed with a good deed. We need to do this in order to bring back the heart toward Allah ﷻ and to wipe out the effect of a sin immediately. Secondly, we must spend some time during the day to reflect on the state of our hearts. This could be through the practice of muraqabah. Finally, we must present our hearts to those who are experts on matters of the heart in order to receive individual guidance from them about our condition.