I think it's very healthy to spend time alone. You need to know how to be alone and not be defined by another person.
In my life I've spent very little time alone. Now that I understand the importance of spending time alone, I really enjoy spending time with myself. I look forward to spending time alone. I can really relax. I don't have to worry about saying the right thing or catering to anyone else's needs. I can really focus on me. Taking time, even if it is just a few minutes can really help me to refocus so that I can be better for the people that I love.