You are smarter than you think, but the fear of failing limits your successes. With small steps and some courage you can achieve great improvements and better visibility. Courage comes when you go outside of your comfort zone and this can be done by complicating your life. This post is about courage, trust and discovery.
You have time to study Wake up one hour earlier than the rest of the family (6 am for me), go out running/walking for 45 minutes while listening to an audio-book about something you want to study. This gives 45 minutes of study, 45 minutes of sport and if you buy bread and croissants a great morning breakfast for the family.