Yes. You can benefit from mindfulness whether you have a specific problem or not. We all have times in our lives when we experience difficulty, stress and struggle; and for some of us this is our daily experience.
Developing greater awareness can open you to seeing how the mind becomes entangled in and blinded by its own liking and disliking, pursuing and rejecting when you try to maximize your happiness.
Mindfulness helps you see with greater clarity how you may approach your moment-by-moment experience skilfully, taking more pleasure in the good things that often go unnoticed or unappreciated, and dealing more effectively with the difficulties you encounter, both real and imagined.