Well, it's a good thing to have connections with characters, and also still make up their own personality! Both are good either way, one can relate to you, and the other could be the complete opposite of you! Either way, it would make things easier to write or draw!
For example, my character for kingdom hearts is Miyuki. She's a bit hyper but also a bit anti social when it revolves around a whole group of people. She gains anxiety when there's a problem, but with the help of Sora and the others, she slowly learns to overcome that. To me I am a bit headstrong and I charge straight to my problem to make it better, or in other times sneak my way past things, since having my combination of being both shy and overconfident.
Having characters is like splitting your soul out to make them part of you. Sometimes they can come out differently, but they are still connected to you!