Hi Rita and welcome
Make small changes to build a lifestyle change that will not fail. By making small changes you will be able to nail down good habits and learn to deal with the bad practices in your life that let you down in the past.
Today is what counts, the past is the past and the future hasn't happened yet. Fight the good fight each day and you will be successful. Sure, some days your nose will get bloody but learn from it and develop ways to avoid the same mistakes so the next encounter will give you victory.
This place can be a great support to your journey...but only if you use it!
Wishing you success