Create a happy (happy) life (this is the most appropriate)
Arabs never say "healthy life". If you have to live a healthy life, this sentence is "create a healthy life." There is nothing wrong with grammar, but Arabs never say that.
Just like China people say "Have you eaten" when they meet, the grammar is correct and reasonable, but foreigners have never said so.
(Maybe the example is not appropriate, but the reason is the same. )