I don't think many people have the life they imagined Milk. I went through a really miserable time in the last few years of my marriage, I don't even recognise the person I was back then now. I used to listen a lot to a song by powder finger called these days, the chorus says: these days turned out nothing like I had planned. I definitely didn't imagine I would be divorcing at 28 and raising four kids...but I am and it's how my life has turned out
best thing I can think of to do is to embrace it, see the good in it and be happy.
For example, some people may look at my situation and think, lone parent four kids living in a bad area...and judge me on it. I can think I made my choices, gave my marriage my all, walked away with a clean conscience and got myself out which is more than many women do, knowing I would somehow have to raise my kids as the main carer. I am proud of myself
it might not be the life I imagined I would have by now, but it's the life I have got and its given me experiences and achievements in ways I wouldn't have had my life gone differently. And there is always opportunity for improvement 
It's all about self perspective, never mind other people's thoughts and opinions. No point wasting time and energy wishing or imagining different things, time is much better spent realising the good in where you are now and what you want to achieve in the future.
Hope that didn't come across as patronising in any way, just life changes so bloody quickly, I personally try not to let myself get down about situations that will pass and end up being distant memories one way or another 