Relationships are not always easy if we're not at the right place in our lives for them to happen. If this is you, the best thing you can do is recognise your situation and find a way to make it work for you before you decide to bring someone else into your life.
1. Emotional Unavailability
Emotional unavailability means you're not able to give yourself to someone on an emotionally level, which is needed in any relationship. It's not fair on you or the other person to engage in a relationship that requires you both to be emotionally available.