Being in a relationship can be tricky at times. Life is already a balancing act in itself and can be more difficult when you add another person to the mix. That being said, from what I've come to realize is making your relationship great is hard work, but following the three C's of a relationship can a wonderful impact on a relationship.
The first C stands for communication. Without communication, a relationship may easily fall apart. Significant others need to be open to each other. If you want a good relationship, be prepared to tell your significant other anything - good or bad. If you communicate with each other your needs and how you are feeling, then there won't be any confusion. It'll also be much easier to solve any complications between a couple if you let your significant other know. Think of it this way: If you're mad that your partner doesn't spend enough time with you, don't be passive aggressive. Nothing will change without letting them know how you feel. By expressing your emotions, you won't be letting your significant other left wondering why you're upset. Hopefully, they'll try to improve upon it, or at least have a productive discussion as to why they can't.
Compromise - there's no avoiding it in a healthy relationship. No matter how perfect you and your significant other are for one another, there's no way that you will never come across a scenario in which you want two different things. In any healthy relationship, there should be a balance between doing what you want and doing what your significant other wants. Maybe you want to go out on Friday night while your significant would rather stay home and watch a movie. There's no way to ensure that you both get exactly what you want and spend time together at the same time. However, you could compromise and make an agreement where one week you stay home and watch a movie, and the other week you go out. That way, both you and your significant other spend time together, and both get a little of what you each want to do.
The final C is for commitment. If you're in a relationship, and you truly care for the other person you should be committed to them. This means, that you can't just be selfish and get what you want out of the relationship. You should be wanting to make them happy too. One cannot have a great relationship if you leave as soon as it gets tough, and stroll back in when everything is dandy. If you can't stand to be in a relationship with someone as soon as something goes slightly wrong, then you shouldn't be with that person.
The three C's really help build healthy relationships and allow you to shape your relationship into a form that you can be happy with.