Regardless of how people say that their brains are “wired” the process of language acquisition is purely a matter of seat time. By seat time I mean that regardless of all other variables, if one spends a certain number of hours actively studying a language and developing conversational skills they will inevitably learn the language. Below is a link that demonstrates the amount of learning hours that it takes to become fluent in a given language. You will see that these languages are divided into different groups regarding the amount of hours to become proficient. This list is constructed from the perspective of a native English speaker which is why the languages that are listed as seemingly “more difficult” are just farther away from English in pronunciation, grammar, structure, alphabet and usually culturally as well. Above all be sure to pick the language that most resonates with you. Learning a language is one of the most difficult endeavors that one can undertake. That means that you should pick one that you're ready to put the time in with