Every child misbehaves sometimes - these are some of the reasons why. For NSPCC advice on how to encourage better behaviour see our guide: http://www.nspcc.org.uk/help-and-advice/for-parents-and-carers/guides-for-parents/better-behaviour/better-behaviour_wda90710.html
Strive to give your children more encouraging words than praise words. Encourage your kids for their efforts and attitudes. Children who receive more encouragement over parise are more resilient. Because they are focused on their effort and believe they can change their circumstances through determination or learning, they are not as shaken by adversity.