Honestly? You don’t. I was gonna try to be a sysadmin but I’m a product support engineer now. The point being shit doesn’t always work out the way you plan. Find something you are interested in, or think about what you truly enjoy doing. For me, it is quite simply the act of helping someone get something done, and fixing various software problems. No matter what job I have, if I can do one or both of those things and make a living I think I’ll be happy with it. Hope this helps.