It depends on how you define success. For some people, keeping a roof over head is a measure of success. For others, until they have great wealth, they will feel like failures (and even then, they may not be happy.)
Amongst my peers, I am fairly successful, but mostly I feel like I have failed in a number of areas. I have had a number of my photographs published, including two books of photography. I have a good paying job in visual effects and graphics for film. I'm buying a house etc. These are all good things, but I can't say that I feel successful. I am in a creative lull in photography right now and the work I am doing doesn't really interest me. The films I have made are not as good as I wanted them to be. I am unsure how my life will go and if I will be able to get good work in the future.
And the areas that most people would think are serious failures in my life don't mean that much to me. I have never been in an intimate relationship and while that bothered me for a long time, I don't think too much about it anymore.
It's not always easy to predict in what areas a person might be successful. I think being practical helps. The Aspies I have known who have had a harder time in life have been dreamers who didn't believe that life could be hard work and didn't make the effort to realize their dreams.
I'm not sure that success is a useful goal. I think it's more important to live your life well and to do things that interest you. If at the end of your life, all you have to show for it is a wad of cash, I would think of that as quite a failure. I feel a successful life is one that is filled with fulfilling experiences.
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Never let the weeds get higher than the garden,
Always keep a sapphire in your mind.
(Tom Waits "Get Behind the Mule")