There is only one you and I know for a fact that while we'll all be worried for you, and Hannah may be a bit ... off, without you around - don't try to deny it, you two are still the best of friends even with me butting in - but we'll all be very happy to see you succeed.
A lot of people just fall upwards, and others have to find their way. Going out on your own isn't a bad thing at all - so many of our friends did it immediately after the war and they're better for it. If this is something you need, more than just wanting a fulfilling career, then do it, I support you wholeheartedly.