Happy relationships begin with being the right person, being a stable person emotionally and behaviorally, and then choosing the right person who is the right person (compatible) and also stable.
You can't make things work with the wrong person no matter how hard you try
You must also have a foundation of friendship with someone before venturing into a relationship.
Its easy to pretend to someone we're trying to impress but with friendship, there is openness and acceptance
You must be someone who is comfortable with being single before you venture into a relationship. This will help you to behave in your relationship from a place of stamina and security instead out of insecurity or fear of being alone.
When you're a stable and secure person, you assess your friendship with a clear head and you know if this person will be someone you want to be in a relationship with instead of rushing in because you're desperate.
When you choose your relationships properly, you save yourself heartache.