I am doing couch to 5k at the moment, just the better version, zombie couch to 5k! It is part of the Zombies, Run! game (an app you can download) and it is so much fun.
I never though I would be able to do this, I am very, very overweight and unfit. when I first went out running doing a minute was hard and now I can do 26. It is the best thing I have ever done.
For me I am in the position where I know how lucky I am to be able to go out running, for years I have been tied to the house and the children with very little freedom as both our children are autistic. My husband got made redundant and to to the children's needs increasing he has become a carer as well for the new few months so we can try and establish some stability.
This has allowed me to have outside the house hobbies for the first time in years which is great. I get up at 6.30am and do either gym or zombie run every day except Saturday. I also recently added a boxercise class on Thursday evenings.
The best tips I can think of are:
Choose an exercise you like, different things work for different people so keep trying till something clicks.
Work out which time of time of day you generally have most energy and try and fit it in then.
Find a more fun way to do things, for me zombie couch to 5k is so much more fun than regular couch to 5k. I love the story line and it keeps me motivated.
Tell people you are doing it, I put it on Facebook so now everyone asks how the runs are going. It means you can't really back out.
I think that is about all I can think of, I am still quite new at this, I am on week 7 of zombie runs, week 3 of the gym and week 2 of boxercise but it is the most I have achieved ever and more than I ever expected to achieve.