At least in Spain many, many people say that they should learn English once and for all.
My experience tells me that definitely they should register in an academy or school of languages. You can start, and even do many things, but in the end you give up since such is life.
They will turn to learning English sometime else.
My experience shows that you need a person and maybe a group that will make you learn little by little but at a definite way. Studying on your own can take more or less a long time, but you leave it because you don’t have the NEED to learn and acquire English or another modern language.
Besides language is something of several people, or a pair at least, because it’s communication. / Photo from: www cityschooloflanguages co uk