With my little experience on cryptocurrency market, I will like to put some light on facts that causes Bitcoin to fall again and again. I have 3 reasons for not lifting of Bitcoin and they are in order from least important to more.
The whales in market make huge sell off, whenever market try to regain and result in sudden crash of market.
Second is regulatory actions, as whenever any regulatory body make any negative announcement regarding crypto currency market falls. Many time fuds are created by sharing false information, which results in panic sell off.
Last but very important factor that I believe is ICO's. Day by day many ico come into market and the money get distributed instead of coming to main stream. Limiting ICO's can result in rising of Bitcoin soon.
I have tried to give opinion on best of my knowledge, If you have any suggestions or views kindly share in comment section below.