Перепишите первый, второй и третий абзацы, поменяв время на Past Simple.
Learning a foreign language isn't an easy thing. Nowadays it's especially important to know foreign languages.
Some people learn languages because they need them for their work, others travel abroad, for the third studying foreign languages is a hobby. Everyone, who knows foreign languages can speak to people from other countries, read foreign authors in the original, which makes your outlook wider.
I study English. It's a long and slow process that takes a lot of time and efforts. Over 300 million people speak it is as a mother language.