How to stop over analyzing my crush?

I have only knew my crush for like 2 weeks without even having a nice long conversation with him but I've already analysed all our interactions and everyday movements for a thousand times... One moment I'm all over the top thinking there's no way he doesn't like me, the other moment I feel like I have no chance at all...

To be honest I feel like I'm kind of still being influenced by my previous experience when I was so sure my previous crush liked me back but he bluntly rejected me (twice). I feel like I'm ok looking, have a good sense of humour and nice character but the whole over-analysing thing maybe making me kind of creepy. I feel like there's a good chance he kind of likes me too this time but I'm too worried about me taking it wrongly again and I start thinking he and his cool friends might be somewhere behind laughing at my advances... or that he actually likes another girl.

What shoud I do? Please help.
How to stop over analyzing my crush?
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