I grew up speaking Portuguese and Capeverdean Creole (African languages mixed with Portuguese). My father speaks French fluently and was also a high school French teacher, so I picked up some of it from him. When I was in the 7th grade I started taking French in high school and my parents also signed me up for French classes at a French Alliance school. I moved to the US when I was 15 (10th grade) and couldn’t speak a word of English. I started out in ESL classes and the following semester I was moved up to college English and, the semester after that, AP English – it’s been almost 9 years since I moved to the States and I barely have an accent now. While I was learning English, I also started learning Spanish by watching soap operas, listening to music, and reading. I took some Spanish courses in high school and college, which helped me improve my grammar. I tried my hand in Arabic, but it was only a 6-week course, so I didn’t pick up much besides the alphabet and a few words (tough language). My next goal is to improve my Italian (I can understand it, but have trouble speaking it) and German. To summarize, I’m fluent in Portuguese, Creole, Spanish, English, and French and know some basic Italian.
My suggestion to you is to immerse yourself in the language. It may be tough at first and you might find yourself wanting to give up, but it’ll only get easier once you get past the initial fear of making mistakes. Don’t be afraid of being judged by native speakers of the language(s) you’re trying to learn. They might laugh at you, but not maliciously, they’re probably just happy that you’re making an effort to learn their language. Most importantly, allow yourself have fun with it :)