NEED MOTIVATION FOR HITTING MY GOAL

HI! ILL BE 28 NEXT WEEK AND I WOULD LIKE TO LOOSE AT LEAST 60+LBS..ILL BE ON VACATION IN JULY AND AM GOING TO SEE MY SISTER FOR FIRST TIME IN A YR IN MAY! I WOUOLD LIKE TO LOOSE AT LEAST 20 BY THEN BUT FEEL CLUELESS ON WHERE TO BEGIN! EATING TIPS AND HEALTHY MEAL PREP IDEAS PLEASE! :) ADD ME!