Easier said than done perhaps. However, you know what it feels like to be taken advantage of or, at the other end of the emotional spectrum, to be loved unconditionally. There are very different outcomes from what could potentially be the same starting point.
Consider the relationships and friendships you have now and look at each one with a view to understanding whether you are giving as much to it as you are taking from it. Is there someone who would be grateful if you invested yourself and your energies into that situation. Would they be relieved if you took a greater share of the responsibility, or of the commitment, than you are at the moment? And would contributing more yourself give you a different feeling about your role?
Have you made assumptions about what it might be that is important for you, but perhaps not appreciated or understand what these important requirements might be for the other person? We don't need to be nosy, pushy or intrusive in order to discover what the other person requires or to learn what they might be going through privately and without our appreciation and understanding of the real picture of their life. We can learn about their concerns and worries, their fears or doubts, by creating a place where they feel safe to share, and by also simply asking them "What's the matter?" or "How can I help?" or "Can I do something for you?"
In the same way that you don't want to feel put upon, or taken for granted, consider the way that people will react and respond to such attention from yourself.
What can you do differently to ensure that your interactions with others are les than pushy and insensitive?
How might you engage with them in ways that are about the benefit, care and well-being of each of you rather than just yourself?
Express thanks to your friend, or to your colleague or work partner for the great things they do. Be clear with them that you appreciate truly what it is they bring to the relationship. Let them hear that you love the way they do something, or that their opinion and sharing of an idea or a suggestion really makes a difference and has value.
Do any and all of these things to show from your heart that you have an understanding of their gifts, and a gratitude for who they are and that you want them to know this.