Feel comfy in clothes or Ultra Lean?

I remember in a previous gym I worked at, a lady asking a trainer for some "losing weight advice" she was enthusiastically told for the next 15 minutes how she could be in the best shape of her life and have incredibly low body fat.

After which I watched her walk off and join her friend on an exercise bike, after settling in on her bike, she exclaimed to her friend who had seen what was happening that it all sounded too much and she was going back to which ever extreme diet she had followed that either didn't work or brought about short term results before she gained it back.

Don't get me wrong, it was good information, it just didn't quite match the ladies goal, she just wanted to drop a few pounds and feel more comfortable in her clothes.

The action plan has to be relative to the goal. 

For some specific weight loss advice- read on!

Healthy Weight Maintenance: Firstly how very lucky! If it's through discipline and eating healthy, way to go! 
If you just have amazing genetics, better just keep it to yourself before you become unpopular!
Seriously though, for most of us, it does require being healthy most of the time, so this is something to keep doing, otherwise you may need to read the next tip very soon or the one after...

Nearly there, few pounds to lose:
Again, good going! If clothes are still steadily getting baggier, keep doing what you are doing! If you have hit a plateaux, go back to your nutrition, can you further decrease any high energy foods, spread portions across the day, change up your exercise programme a little.

Got at least a stone (14lbs)  to lose:
Again if you are already losing steadily, keep doing what you are doing. If it's slowed, back to nutrition habits, don't try and change everything, but start to decrease high energy foods, increase healthy protein and healthy fat, watch portion size and aim to do a couple of strength training circuits a week.

More than a stone (14+ lbs)
Losing that much over time should have a big positive effect on your life, firstly figure out how it would change and benefit yours.
Nutrition habits are always the place to begin, decreasing food you know isn't good for you, implement things steadily, try and find food that is both healthy and tastes good, that way you have a better chance of making it a lifestyle.

Actually I want to be in the best shape of my life, with super low bodyfat!:
It's all about the discipline / life balance, but careful random people might ask you sternly "do you even eat anything other than Chicken and Brocholi?"