What are some important skills or tasks, teens should learn?

teenagers should face failures and must inculcate an ability to try again and again to succeed in everythin they do in their life.

I dont know what landary is. I think that being creative will help. If you are creative you can handle everything, find solutions to problems, find ways, different ways to do things. Without creativity life will be very hard and dull. I don't think things like washing dishes or banking will make teens a happy adult since there is nothing happy about it. You can only learn those tricks so it will cost you less time but if you don't like it, it will still not make you happy. Happiness is something you have to decide to. Only if you want to be happy, if you are willing to do everything in your power to make yourself happy (not expecting this from others) you will be happy and succesfull and again you need to be creative to do this, esp. if you are not rich and can't buy what you see/want.

I think that both children and teenagers these days spend far too much time focussing on passing their exams and simply getting to the next stage of education that they simply don't think about the ways in which they could be learning other life skills which simply aren't taught to them in a classroom. All teens should be allowed to complete a work placement for one afternoon each week which they will be able to put on their CVs and use as a reference for future jobs. Simply having qualifications just isn't enough for most people these days.

I think teenagers should start being responsible as early as possible. This will entitle them for more success when they grow up. They should still have fun, of course but their main goal should be success and discipline.

I am inclined to agree with you. If you have that responsibility as a teenager then I feel you will be more responsible and successful as an adult. Don't parentify the child and make them have responsibility over their siblings, but teach them to be able to survive on their own. I think it makes them more confident because they said hey they can do that. Laundry, banking, money management and so on are all helpful skills to learn and indefinitely useful.