There is no need to be angry at yourself. It is normal to be insecure and uncertain about your life's path.

All you need to do is do something about it. Getting an advanced education is really recommended for obvious reason. The way society is arranged now, people without an advanced degree risk being left behind.

Also, it can be a lot of fun learning complex and interesting things.

It is Christmas now, so maybe some time to relax. But if you feel the way you feel, take action. Don't just sit around and worry. As for your options, you give too little info for others to advice you.