I chose to make the habit change in the summertime. This allowed me a different routine to help jumpstart the change. Since I wasn’t packing a lunch, it was easier to not have soda at the ready throughout my day. I also didn't want to make the change when I knew I would be stressed. If summer won’t work for you, I suggest trying to work on this during another break from school. While I didn’t have any major side effects from cutting sodas out, you may have a different experience as we all react differently. You may want to limit how much you need to “people” when going through the process. During school breaks, I just know that I am able to better focus on me than when I am juggling school and home life.
I found that I was missing something when I cut the soda out. I missed the carbonation. It wasn’t the sugar for me, but it was the bubbles. So, I tried out all kinds of fizzy water. Luckily, there is a plethora of them on the market to try. I like some better than others. When you are looking for a replacement, be sure to read those labels and make sure there is no artificial sweetener. I ended up drinking lots of LaCroix. Now, my favorites include Spindrift, Aha, and TopoChico. It may take some trial and error to find your favorite flavor. Some, I loved, some others, not so much. It helps to have a buddy to go through this with, because you may love some that she doesn't. You can split a package of different flavors to see what you prefer and trade out the ones that may work better for your friend.