When you make that decision to stop your substance abuse and do something about your addiction, you generally put all your energy and focus into getting through and managing the withdrawal process and the physical effects you experience during early recovery. After some time in recovery however, your physical withdrawal dissipates, you begin to slowly start getting your energy back and you start feeling more and more "normal". What has been hugely important for myself in my own recovery, has been spending time on my own mental and emotional components with regards to life in general, and in connection with my addiction and recovery.
Identifying some of the precursors to your eventual use with your addiction, and other underlying stressors and issues that have plagued you and your life over the years is important. This takes time, and involves a period of self discovery, reflection, and learning about who you are as a person. I believe this is something that also evolves and continues throughout your life. We are always changing overtime, the way we see things, our perspectives, our views on certain issues tend to change overtime as we grow, develop and mature.
I think it is important for many recovering addicts to at least recognize that there were reasons and perhaps a series of things that led them down the path to substance abuse. It could be a range of different issues that have seemingly affected your ability to cope throughout day-to-day life; anything from being a parent to a difficult child, stressors at work, grief and loss of a loved one, negative or bad relationships with family or friends, depression/anxiety or other mental illness - anything that you experience basically that affects your ability to cope or deal with the stress of that event can be the impetus for your use.
After you spend time on identifying the elements that you believe have contributed to your substance abuse, it is an excellent idea to consider rebuilding or at least attempting to repair and stabilize those elements that pushed you down the path of your addiction. I always recommend seeking professional advice, whether it be through a counselor, a psychologist or other health professional or support system. Airing your thoughts to a range of different people to determine the best way forward for you to rebuild is a great step towards living a new fulfilling life. Remember to take your time, make small goals that can lead to greater changes in the medium-to-longer term. Life is not a sprint - it's a marathon.