Present simple vs. present continuous

​We use present simple when something happens regularly. Routines, normal things.

• every day, every week, every Monday, every year

• always, often, usually, sometimes, never

• on Mondays, in the mornings

I play violin on Wednesdays. I have lessons.

He always eats his lunch at school.

​We use preset continuous for things that are happening right now.

Now, right now, at the moment.

Context clues
Look out of the window! It is snowing. (= it's snowing right now)

Shh, be quiet. The baby is sleeping. (= it's sleeping right now)
Paul can't play with you. He is eating his dinner. ( = he's eating right now)