As the above suggests, maintaining a balanced social and professional life, while reflecting and critically analyzing your behavior are keys to avoiding being clingy in your relationship.
You are being extremely nice, excessively accommodating and very careful with your partner.
You also want to keep him/her from being exposed to and/or seduced by other people, so you try to spend as much time together as possible, all of which is likely to be perceived by your partner as being clingy.
So, how do you handle you become less needy and clingy with your partner?
Maintain and actively pursue new and old hobbies and personal interests and make sure that your social life remains active with a circle of friends and you don’t just wait for your partner to call you or come home and rescue you from feeling lonely and bored.
This doesn’t mean that you have to take your work life to the extreme and stay at the office till midnight or not returning his/her calls.