I guess it's different for everyone, but for myself, I started 6 weeks ago and I wasn't sure what to do with my eating or with my exercise at first. So I went to the gym and worked out. Then a day or two after that, I thought to myself, well I'd better go again, so I went. Pretty soon, it developed into a routine by which I went four times a week for forty minutes to do cardio. Recently I saw a trainer for a strength training routine and I'll be adding that on this week. I've pretty much been testing it out all along. Even 6 weeks later, I'm still putting all the pieces together... maybe that's because I'm taking it slowly and trying to consolidate one aspect before I add something else on... but it's working for me and as long as it's doing that, I'm satisfied and happy about it
So how do you start? You just do it one choice at a time
Whether that's a breakfast dish or deciding "I'm going to exercise today!" or even just saying to yourself, "YES I CAN DO THIS". You decide what you want to do, how you want to do it, and then you set out to do it
Sometimes it works better than other times, but the goal is to keep at it overall and you will see results
I don't know if that's something you were looking for or helpful, I'm still trying to figure out what I'm doing myself
but give it a try and remember that nothing's ever really set in stone. Try things, see what works and what doesn't, what you're comfortable with and what is realistic for YOU, and give your body a little time to adjust.
Good luck and welcome again