In your daily cooking, consider replacing some fresh vegetables with frozen vegetables. Frozen veggies seal in more nutrition, colour and flavour as a result of quick freezing process (QFP) at the time of their packing when they are appropriately ripened and nutrition packed. Most fresh veggies are picked before they ripe, they may show signs of ripening by the time they reach the grocery shelf from the farm. They are however not as nutritious as they would have been if they were on the plant for longer.
Frozen veggies should be steamed or microwaved or pressure cooked to retain all nutrients. Never boiled or blanched.