1. Get a planner.
Planners are an easy way to keep track of your life through assignments, meetings, etc. The average person that has their life together has one.
2. Use said planner.
Having a planner is one thing, using it is another. Use your planner. Plan your work and work your plan.
3. Set goals.
Figure out what it is exactly that you want to do and figure out how to do it. Set reasonable goals and strive to achieve them.
4. Be determined.
If you've made it this far reading the article, then you must be at least a little motivated. Also motivation doesn't matter; it's fleeting. What does matter is determination, following long term goals.
5. Clean your living space.
Decluttering your living space is symbolic of decluttering your life. Clean your room/apartment/whatever & get your life together.
6. Find an outlet for stress.
Stress can easily overwhelm a person, especially when they don't feel like they have things together. Find something that you enjoy doing that brings your stress level down.
7. Start a routine.
A good habit is hard to break. Start a routine and make yourself stick to it.
8. Drink more water.
Everyone I know that has their life together (not including me, I don't have my life together) drinks a ton of water. The average human functions best when two to three liters of water is consumed daily. Being healthy also helps you get your life together.
Not only does exercise help with health, it also helps a person feel like they have their life together. Even if they don't.
10. Realize that it isn't possible to have your life 'together.'
You cannot control everything in your life and it is therefore impossible to have your life together. You may create and maintain the illusion of having your life together, but you can't truly have your life together.