Hi Pazzo01, it might not be as much that you're lacking passion or real interests into where you want to go in life, but maybe more so that you haven't looked into options enough to bring out/foster that passion/interest???
Maybe finding out a bit more information about different career options might help, talking to people in different careers (bound to be some online on different sites ) might help as well or you might find some related documentaries. For some careers there may be "open/recruitment days" where you can go along and find out a bit more or employment agencies might be able to give you some more details.
And maybe have a think about some of the things you really liked about the jobs you had when you had them, or apart from those what your priorities would be in the job you may end up in e.g. involving more or less communicating with others, working with more or less people, helping others or making targets...............
But don't rush yourself, it might take time to build up an enthusiasm, particularly if you've been feeling down. Which is maybe something you could think about separately if it's holding you back..........you know the kind of thing...........any thing you could be doing that may make you feel better in/about yourself???
And you know, don't worry too much if the career you choose/start to pursue doesn't grab you as "the vocation of your lifetime, what you were born to do". It really doesn't always happen like that, sometimes it can take time doing a job, sometimes it can take several different changes of job...........and for some people they might not ever find that career but that doesn't at all mean that they can't be just as fulfilled/satisfied/content/happy in different areas of their lives/in different ways.
And besides your personal identity is going to be in much more than a job, so take from the strengths you have, hey?

Alison