to behave badly or cause trouble
sich schlecht benehmen oder Ärger verursachen (zikh shleht benehmen oder Ärger verursakhen)
"The kids started to act up during the long car ride."
"Die Kinder begannen während der langen Autofahrt, Unfug zu treiben." (Die Kinder begannen während der langen Autofahrt, **Unfug zu treiben**.)
to stop making excuses and take responsibility
to give attention to becoming better at something
to use one’s suffering as motivation for positive action
to develop into something beautiful or full of life
to think about something that happened in the past
to contact an organization in writing regarding something