This one simple act gives you a happy home. Smiling! The people in your home are waiting for you to acknowledge them and their work. We need to be careful who we give praise to. In a joint family system it is easy to get caught praising one family member more than the other.
Parents need to be careful who they praise. Make praising a regular habit not just when there is a huge effort made. When there is a big choice of dishes it is not right to pick one and praise it, as this hurts the other family members who have also cooked.