Lust

Not a sin- feeling sexual attraction, sex with consenting partners, masturbation, consuming pornographic media, having several sexual partners, sex before mariage.
IT’S A SIN WHEN- the person projects lust onto an unwilling recipient person and does not take into account their wants or consent. Rape, harassment, sexual assault, catcalling, dick pics.

Gluttony

Not a sin- food, enjoying food, cooking, eating sweets, eating meat. In the larger sense, accumulating material things you enjoy, like books or collectibles or whatever. 
IT’S A SIN WHEN- It deprives other people of what they need.

Envy

Not a sin: Wanting things you see other people have, like money, power, fame.
IT’S A SIN WHEN: This is how you define people, and stop respecting them as humans. It’s a sin when you use them for what they have and what they can bring you.

Greed

Not a sin: Wanting financial security, working hard for the things you want. 
IT’S A SIN WHEN: Your own financial growth depends on keeping other people impoverished and suffering.

Pride

Not a sin: Being proud of your accomplishments, liking your looks, dressing up
IT’S A SIN WHEN: It stops you from accepting your faults and seeing how you can be wrong, not admitting that you can better yourself. 

Wrath

Not a sin: Righteous anger at situations, being mistreated, seeing other people suffer, at the injustice of the world. Self-defense. Revolution. 
IT’S A SIN WHEN: Violence towards defenceless people, hitting your partner or your kids,.  Violence fuelled by intolerance and bigotry. 

Sloth

Not a sin: Resting. Sleeping. Taking a day or a year off. Being unproductive. Playing videogames.
IT’S A SIN WHEN: You stay inactive when action is required. When people need you and you’d rather do nothing.