Hesychia is a fancy word that means peace and quietness. Imagine being in your bedroom with no lights or noise, just you and your thoughts. That's what hesychia is all about.
Some adults believe that if they want to be closer to God, they need to find peace and quietness. They go to a special place and sit quietly, thinking about God and nothing else. This is called hesychia.
It's like taking a break from everything that's happening around you and just thinking about God. It can help adults feel calmer and closer to God.
So, when someone talks about hesychia, they are talking about finding a peaceful place inside themselves where they can talk to God without any distractions.