One of my mentors told me that struggle is the universe's way of telling you that you are barking up the wrong tree. She told me to look at struggle as a good thing because it is guiding you to the fact that there is another path, plan, or attitude that will get you to your goals and dreams with more ease.
Here's an example of career struggle that eventually led to fame and fortune. Lucille Ball had a dream to be an entertainer. She began her career in modeling which led to a stint on Broadway. She'd land parts, but would soon get fired from each one. Moving on from theater, Lucille went to Hollywood to be a movie star. She landed movies parts but soon became the Queen of B movies, a position that was not for her.
Everything changed when Lucille met Desi Arnaz. He told her that drama wasn't her suit but rather comedy. Lucille got hired for a comedy radio show which became a hit. CBS then wanted to turn the radio program into a TV show. Lucille would only do it if they hired Desi to play her TV husband. CBS said no because they thought viewers would not be interested in watching a bi-racial couple. Determined, Lucille and Desi took their act on a vaudeville tour where it became a hit. CBS then reconsidered and "I Love Lucy" went on to become one of the most beloved shows in TV history.
If you're struggling in your career right now, and not getting any where but frustrated, perhaps it's time to look at going down another path or creating another plan of action. If what you are currently doing really was the best course, you would be moving in a direction of flow and least resistance. Get your creative juices going. Your dream is yours to have. It just may be a different picture than you imagined.