What is the most important key to maintain a happy life?

  Hi Maria! ^^

Welcome back to Monday! ^^

Since we are talking about happiness, I hope

your long weekend and these coming holidays will make happy to

spend with your family and relax. Thank you for the homework.

See you in class ^^

Teacher Glenda

Here are my corrections:

I think there are three key point to maintain a happy life.

>> I think there are three key points to maintain a happy life.
 First, physical and mental health are maintained in their family.

>> Correct

or

>> First, Physical and mental health of the family should be maintained.
 Second,after challenge and do the best, thanking the situation and adaptaion.

>> Second, after every challenges and doing your best, you have to thank the situation and adaptation.
 Third, one live for oneself and others.

>> Third, one should live one\'s self and others.