"The only place where your dream becomes impossible is your own thinking" -Robert Schuller
Just to help you out later with simple troubles like this, if you hover your mouse over or tap the word on your phone, a list of definitions will be provided for you. Some still of these definitions are not always accurate, especially in the case of idioms, but it's still a useful tool.
"it is possible if we believe"
isn't it correct? it's not approved.
and is the "isn't impossible" true??
♪ Ci possono essere miracoli se tu credi. Nessuna speranza è gracile. È difficile ucciderla. Chissà quali miracoli tu puoi raggiungere. Quando credi, in qualche modo andrai. Andrai quando credi. ♫
It means the same thing, but for a program like this changing the word order around unnecessarily is often going to result in your answer being marked incorrect.