Dear Joyce, I have two preschoolers and one child in elementary school. Â I feel like I am very irritable and short most of the time, and I never thought I would be so impatient. Â My 4-year-old disobeys constantly, and I find that I am screaming at him every day. My kids are screaming and hurting each other. What can I do? Help! Â Sarah Dear Sarah, Thanks for acknowledging your struggles.…