The antonym for the phrase "closed one doors" would be "opened new doors". This means that instead of closing off opportunities, new ones have been created. When one door closes, it is important to remember that it is not the end of the road. While it may feel like a setback, it can actually be a moment of growth and potential. New opportunities can arise, bringing forth new experiences and possibilities. Therefore, it is important to remain positive and hopeful, knowing that each closed door leads to a new one opening up. Embracing change and remaining optimistic can lead to success and happiness.