Read your books and study hard. Listen in class instead of texting. Ask for help when you need it. Come up with silly games to help you remember things or silly rhymes. Find study buddies. Some of my class has failed out but most either have repeated or class or they have been like myself and done fairly well. Know you are going to be studying every day of the week including weekends and holidays. Take short breaks while studying to refresh your mind. Then I think you wont have to worry about failing:)