Im 13 years old and smoke a tiny bit, help!?

well basically i smoke a tiny bit, i usually only smoke with my friends and when im bored and it pass time quick.. i enjoy it and it relaxs me. im not addicted and im probably wont be because when i start things im really good at giving it up. trust me. tbh i don't smoke cigarettes much because they cost loads! sometimes (most times) i just wrap up some paper into a cig, light it and smoke it. i know that's stupid but its fun.. what do i do now? will having 1-2 a week effect me?