to change one's opinion or attitude
die eigene Meinung oder Haltung ändern (die eigene meinung oder haltung andern)
"After hearing the good news, he decided to change his tune."
"Nach den guten Nachrichten entschied er sich, seine Meinung zu ändern." (Nach den guten Nachrichten entschied er sich, **seine Meinung zu andern**.)
to make someone feel happier
a controversial or sensitive political issue
to wash something quickly with water
something good that happens by chance
To risk everything on one big decision.
a complex problem that may cause more trouble once started