It can mean that you think something is true, for example "I can't help feeling that I am going to be fired soon." It can also mean that you are feeling a certain way or emotion, and you can't change or stop it. Example: "I can't help feeling angry with him."

Going to another country when you are learning that country's language is always a fantastic idea. The goal when learning a language is to surround yourself with it. This can be done with music, TV shows, newspapers, radio, language exchanges, etc., but the fastest way to become more fluent and confident in the language is to force yourself to use it. Therefore, traveling abroad to learn a language is a fantastic way to do it! When you have to use the language every day, it makes it much more difficult NOT to learn it.

I agree with Peachey. Also, if you really want to use "envision yourself", you need to use "having" instead of "in". Here are how I would phrase both of these questions, since they should both be in the conditional form. If you were to have a wedding one day, what type of wedding would you envision yourself having? If you had a wedding one day, what type of wedding would you have?

She didn't get my message. This version is just a little bit stronger. It is in the past simple, so it makes the sentence's meaning more clear. She definitely got my message. This would be the best way to say that she successfully received the message.