I wouldn’t say it’s essential, more one option out of a whole bunch you could use to improve yourself (though we pay for many essential things like housing, water, food… Welcome to life as we know it).

Therapy isn’t going to “fix” anything. It’s a way of helping you reflect on yourself, see where your problems are, give you some perspective and start to see things differently. It can help you understand why you have certain behaviours and traits and work on unpicking them or unlearning them. But like I said, lots of other things can help you get there too, like meeting new people and having good chats, taking drugs that change your perspective, travelling, reading books. All of the above combined.