Do you need to have one before the other or should you tackle both at the same time? I've always gotten caught up and discouraged if I take on too many things about myself especially if I delve into body image and self esteem. Deep and heavy stuff if you are ready for the lessons. Once I keep my focus one thing at a time, I look around after a few years and say, "hey, I didnt realize i began to feel better about this or that!" For me its all in not trying too hard but bite off what I can chew, and live with it for a while. I have been so fortuneate to be able to get into therapy. I am an advocate of good healthy self introspection with a licensed practioner during various emotional passroads in your life. But it doesnt end there...I feel its a jump off point, for the practise of what you learn in session. I uncover so much of where my self esteem is when I know I'm not feeling healthy and strong...its sitting with my poor body image feeling sorry for itself instead of shining bright like a star. So I try to consciously take responsiblity of why i feel what I feel when I'm aware of it and get back on track the next day with movement, eating well and getting enough sleep. Between you and me, I dont know anyone who is consistant with the power 3: work out, eating well, and sleeping enough. If everyone were really honest, and I mean really really honest, I dont think many of us would say we are on a schedule 100% of the time...so I try to practise catching myself (just like training a dog) when I start to feel down and begin to pick on myself, I quickly reflect on the last three days and take a quick scan. Usually that helps. Other times, I just want to feel badly also and be just that...blaa and have a good cry.
So for me, I feel body image and self esteem go hand in hand many times....any work you can do to improve one will have positive residual on the other. Always a work in progress. Never give up.