I love healthy food but always seem to go to junk food instead(im very skinny but would like to keep like that?

Ok so i am 13 and very skinny! But my step-dad is not so much on the skinny side, we have a lot of junk food in the house because of him. I love salad and gs or any fruits and veggies for that matter. But whenever I open the pantry it is the junk food I seem to grab.My friend always says that kids have low metabolism but adults always say that what they ate as a kid kicked in in the later years...When i am eating candy or pretzels or any junk i know i should be eating healthy food. But eating gs and apples over and over get pretty boring. Do you have any recipes that are short and very healthy?Like smoothies,salads,deserts.ANYTHING HEALTHY. That do NOT include tomatoes or asparagus! lol