Well, don't force yourself to learn the language. It ain't fun that way in my opinion.
What i usually do is
- listen to music in the language
- watch series/movies
- read books
- find some friends to chat with
- may be weird but: talk to yourself sometimes translating some sentences. No one will hear it but it will improve your skills.
- attend a course
- don't be afraid to make mistakes :)
It takes time to learn a language especially German. The best way is to just keep going.