Welcome to 3FC =)
Congrats on the work you've done so far =)
Any plan that you try is going to require commitment. You don't necessarily have to be "hardcore" about a plan, but if aren't going to stick to it like glue, then you have to adjust your expectations.
For example, you've been exercising here and there and semi-watching your food (as it seems from your posts) and so you've been able to maintain. This is actually a pretty good thing. Maintaining is a success.
Now you simply want to start to lose a few more pounds.
If you're bored, switch things up. You can try counting calories (free), you can read a few books on different ideas about food and try to implement them into your life and shopping list, you can sign up for a new workout class at a local gym, you can ask a friend to take a daily walk with you.
What's keeping you from committing? Do you put it off until later? Schedule it in. Do other people drag you away from what you're doing? Tell them they'll have to wait, this time is your time for yourself. Are you not accountable? Tell a friend so they'll ask you about it later.
I'm a big fan of Weight Watchers (having lost over 100lbs on the program before), and found that there were a number of ways to switch things up while still vigilantly keeping track of my food intake. But, the program certainly isn't for everyone.
You have to find a plan, or make changes that make sense in YOUR life. You don't even have to use a specific "diet" so much as formulate an idea for changes that you want, and then start acting on those changes.
You can definitely find something that works. Keep your eyes open, and focus on what you know you can do for now.