There are 24 hours in a day. Eight of those hours are spent sleeping, another 8 on average working, then that leaves another eight for doing things that are needed. Factoring in travel time, housework, children, etc... Time is definitely a luxury that the majority of us don't have. We want to do so much and accomplish so many projects.
I have a method that works for me. Let's say you have a goal to learn play a new instrument, write a book, or anything that you have in mind. Write down your goal on a poster. Draw out three lines one vertically with the following categories of Past/Present/Future.
In the past category write down the actions you have taken that haven't worked for you. After that in the present write down and analyze your current schedule. While doing this you may find time slots that you can devote to your goal.
For example in my case, I have an hour in the morning, and two extra hours in the evening to write. In total I have allotted three hours worth of time that I can dedicate per day toward writing my book.
I try my best to keep that schedule because it is a way of honoring myself. Use your "extra" time to do what you need to do in order to complete your goal.
Now on the last column, future, write down how it feels to achieve your goal, what will you benefit from it?
Write down everything positive that will enrich your life.
Keep a journal that tracks your progress.
Somehow time you thought you didn't have, you do have. Another piece of advice I would like to share, I call them time wasters.
Cut out people, things, that are not giving you worth in your life, these are just distractions, also, don't feel bad saying no.
This is your goal, it's not selfish it's self-care. Have a good time.