Why I dont sell ADA when price come to 0.2

Time goes to now. The price of ADA is $0.2 when I bought ADA at $0.39.

As almost thought, The price may down again in 1 week. It seems I sold ADA now and buy it at a lower price could be a good choice.

I thought for whole morning. Yes, I choose to hold ADA and wouldn't sell it although the price will down.

Honest, the wallet of ADA is so hard to use! I could not sync the wallet succeed.