Step 1: make sure your breath is I c y f r e s h(I'm not joking that's actually important.)
Step 2: Dress casually, but not too casually(I'm still not entirely sure if your a girl or a boy or not, so if you're a girl, wear a dress with black stockings. If you're a boy, wear a button-up shirt and khakis.)
Step 3: If you have time, bathe thyself. ( DO NOT forget to put deodorizing agent on cause you will notice you smell not fresh.)
Step 4: play music you enjoy on the way there to increase your morale stat. (this is optional, but it really helps.)
Step 5: remember to look people in the eyes when you speak to them. (Pro-tip: look at their nose every time you speak to them. at the correct distance, it will look like your looking at both their eyes at the same time.)
Step 6: Lie about your day if it was bad. (trust me on this.)
Step 7: Don't get too much food. it will make you look too greedy. (eat before you have to go out to eat if you have to. a sandwich will suffice.)
Step 8: slightly adjust your personality to fit hers. (I know this sounds bad but this does WONDERS, trust me.)
that's pretty much it. do these and you should be golden.