All of the responses in this thread are vague because your question is vague. If you have put away enough money to fund your own idea or live salary free for a

All of the responses in this thread are vague because your question is vague. If you have put away enough money to fund your own idea or live salary free for a year (or amount of time you're comfortable with not earning) then go for it. If this is just some itch you're looking to scratch try changing team in your company first and see if you still want to leave. This question depends on so many variables that you can't possibly expect someone to give you a clear answer.