To dream of having a career represents your preoccupation with doing something you are skilled or adept at all the time. All of your life revolving around a task or project. Becoming accustomed to a predominant or long-term situation. Feeling that something in your life is important to do all the time.
Negatively, may reflect obsession. It may also represent your fear of stopping something or having to change. Going to far with something.
Consider the type for additional meaning.
To dream of losing may represent an abrupt change in your life. Confusion or a loss of stability.