The truth of the matter is that most things that you are doing to get back together with your ex will fail. They will most likely push your ex further away. The reason I know this is because I have used most of the same techniques that you may be trying. Calling or texting at all hours of the day.

Trying to figure out how to accidentally run into my ex. Making unrealistic promises of what I will change if I can get a second chance. Apologizing for anything that I can think of.

Do some of these things sound familiar? I know that they are some tactics that I tried without any success. All they did was drive my ex further and further away from me.
Don't try to contact your ex at all hours of everyday. Give them some space to think and to actually miss you.

If you are constantly trying to contact them then they will never actually miss you and want you back. Something in the relationship wasn't working for them. You need to figure out what went wrong and also what went right. Eliminate or change the bad things and try to accent the positives.

Don't make outrageous promises that you have no intent of keeping. They may help in the short run but they will ruin all your credibility down the line. Don't apologize for everything under the sun. Apologize for what you are truly sorry for. Apologizing for everything makes you look pathetic and desperate. You want to look attractive and strong, so act like it.

Use the time apart constructive. Get back in touch with friends that you have most likely been neglecting because of your relationship. Get back into some hobbies that you neglected while you were in the relationship. I know that when I was on a break from my fiance I played a lot of golf. It was very relaxing and therapeutic.

When my fiance and I got back together I made it clear that I enjoy playing golf and I was going to make more time of it. She agreed that it would be a good idea. She is actually learning how to play so that we can share the experience.

Who knew??