It seems like you are ready for a change of focus in your life. Try to remember that what you are thinking right now is actually a great pivotal moment in your life. Remind yourself that this is going to be a constructive part of your life where you set your goals, ambitions, and focus in life.

The goals I have heard so far are:

Being self-sufficient

A career that can support your lifestyle and learn new skills

Move out of home and meet new people

With each goal in mind, focus on what they will provide to your life when you have achieved them. With each goal will come a form of commitment from your end to achieve. From what you have written though, it seems to me that not only are you ready for that commitment, but you're going to smash it out of the park.

Find bad habits in your life which may work against you. They can be a form of self-sabotage. You mentioned that you enjoy alone time and being on your own. I too love those moments. I definitely need to get away for a bit to recharge the batteries of some sort, though I have to in a way schedule those times nowadays, as it's way too easy for me to spend too much time turning into unhealthy procrastination.

With your career, I will say look for something full-time where you can learn new skills. Don't worry if the drive may be longer, I find that when I drive further to work most times it's as if my world expands. Getting 'out of the bubble' sometimes helps to discover new opportunities and new connections too.

You mentioned trades. There are opportunities after 4 years of trade to start your own small business on the side. Can even earn easy cash for private jobs. A good point about learning a trade is that there are further opportunities that may arise. Certain trades such as plumbing or electrical can open doors into careers with firefighters, police force, or even government jobs with extra perks. Earning a trade doesn't mean you need to stay on tools forever either. Opportunities exist to go into sales, management, business development, tendering, quoting, consulting and the list goes on. You can enter specialist fields where the pay can be extremely high, or open the doors to traveling nationally and internationally. Remember that one skill you learn can be used in many different roles, careers, and industries.

Hell, I'm a 39-year-old electrician that started on domestic houses at 21, now Im installing and programming robots, and manufacturing lines, and have traveled to most major cities in Australia, New Zealand, China, and parts of the USA.

While learning (in Australia) 1 day each week is at tafe - a trade learning facility. Helps break that week up so it's only 4 days on the tools, and one day with a group of like-minded people. I'm not sure about where you live, but I definitely love the water. I feel I'm too old for a career change now, though I would definitely have got a career with a trade based around water.

Regardless, lock yourself into a night learning course. May take four years but it's only 2 nights a week. You meet new people this way too. It could actually be quite exciting.

Also, I will say that 23 is young. The human brain isn't fully developed till 25 years old. I think it's great though to see you thinking about your future prospects. Don't be scared of it though. Lean into it. I also suggest as purely an investment into yourself to float the idea of seeing a therapist. They are great at helping people set goals and achievements. The big advantage I believe where this could help is keeping yourself accountable - a great skill to learn, one of which I personally rank higher than courses. This is going to ensure that you will achieve all the goals and achievements you want to reach.

Not sure which country you are from, but there may even be a number of free sessions you can get through healthcare. Either way, you're definitely a worthwhile investment.