Those who have command over many languages are generally found to be more successful.
What seems to be a Herculean task is quite easily done by breaking it into a word a day. All professionals prosper largely because they understand the value of knowing more languages. When you speak to someone in his own language you can see the smile on his face. The gap is reduced and there is more openness between the two. There is a definite bondage which goes a long way.
Imagine someone in an unknown land speaks your language when you are stuck amidst a dense forest. Languages have their own appeal and bring in happiness. It sounds very simple and interesting does it not? Languages bring people together. Even cultural values and racial differences are bridged. The more number of languages that you master the more successful you become.
Encourage your children to start it now so that they will find it fun learning. Obviously you want them to be more successful in their lives. Mere learning a word a day will not help unless you keep using the words in context constantly. Read and write as much as you can so that your learning is more effective. Speak to people whose mother tongue is the language you are learning. See films in that language and watch commercials on the television.
While learning any language you are bound to make mistakes, do not shy out. Try not to make the same mistake again. Slowly but surely you will find improvement.