Hi Jaime, congrats on quitting! When I quit, wondering if I will "still be me" was a fear that I thought about. Smoking was an integral part of my life for 19 years . And virtually everyone in my life knew me as a smoker. But I and many others here will attest: YES you will still be you. And, a healthier, better version of you. A more CONFIDENT you, knowing that with each passing day, you conquered one of the most difficult addictions out there. All of the things that you enjoyed as a smoker - that sunset, socializing, etc. are still here for you to enjoy, and always will. And you do NOT need a cigarette for any of them
Re: feeling tight in chest, this is a common sensation many of us had when quitting. Please don't be alarmed or afraid enough to go back to a cigarette. Your body is going though a massive, great, awesome resetting and cleansing. It's performing natural functions (that were hijacked for years by cigarette smoking).
Stay close to this board for advice, and ask any questions that you have. Keep it going!