Learn something new. Go to udemy.com, choose one course with a practical effect, buy it on the discount ($9-$12, not more) and just follow it carefully. I can recommend Max Schwarzmueller as a teacher as I like his style and pleasent voice (https://www.udemy.com/user/maximilian-schwarzmuller/) but it's up to you. Take one thing like, CSS or Vue, as that will give you a quick win with a visual result, achievement and fun beside of trying and learning something new. Best!