In love, you want to both give it and receive it. And it’s not much of a difference whether 1) you give love to another person and they give it back to you or 2) you give love to yourself. You can feel loved either way. Both can satisfy you.
It’s usually less intuitive to give yourself love though. It’s also more difficult to register feedback. Did you really feel loved through what you did for yourself? Remember that love is about giving the other what THEY want to receive, not what YOU want to give. This is an issue as much when it’s about giving love to yourself as when it’s about giving it to another. It’s quite difficult to hear your true voice sometimes. It takes real awareness.
When you’re single, practice giving love to yourself. If you really want to get good at it and feel the love, you have to pay great attention to what you do and how you feel afterwards. Does buying yourself flowers “work”? Does writing compliments to yourself on sticky notes “work”? Does taking action on what you really wish to be doing “work”?
The key to success in any love is proper intention (to make the other feel loved) + sharp attention.