For some, it is possible, but many people are unable or unwilling to retire early due to the fact that their monthly expenses outweigh their prospective non-working income, forcing them to work to meet the costs. Yet, whether or not to retire early is a personal decision.
Sometimes people get injured in accidents and they are forced to retire from their jobs, while there are many who deliberately decide to retire early. But for those who want to retire early on their own, I personally guess the two problems you are most likely to face. Retiring early means giving up your regular paycheck, which will suddenly stop your financial stability. You can't continue to save for retirement or afford the luxuries you enjoyed while working. Another most important thing is that as you get older, the cost of health care will increase which will become expensive for you. So I think you should continue working until you save enough.