The biggest myth in fitness is "No Pain No Gain."
You don't have to kill yourself and you don't have to hate the process. What you do need to do is to move. Most of my clients have come to me for the past 20 years, pretty much wanting the same thing. People usually just want to lose a few lbs. (or several lbs.) and to tone up. The same rules apply if you are a couch potato or an elite athlete. You need to do more than you're doing or change what you ARE doing.
The majority of men and women who come to me want to take off the weight that the past few years has added. They want to look more like they did in their 20's now that they're in their 40's and up.
The good news is, the less you're doing now the easier it is to get to the next level of improvement. Start slow and remember you didn't get this way overnight. Walking is a good place to begin and many body parts can be toned even without weights or machines. One more important tip, it's not how much you lift but how well you lift. Use good form and never worry about how big the weights are!