Thanks for all the awesome replies guys.i have read each and every response till now.Now i have decided not to gamble but i can't hold also because as you all know the bitcoin rate is already low.Few days back my 1 bitcoin worth 470$ and now it's just 377$ 
That makes me sad.i don't know what will happen in coming days so i just want to constantly grow it.Till now,only altcoin trading wounds to me a great idea so if anyone please provide me some info where to start to learn altcoin trading and how to profit?Even 10$ a day would be fine too trading.
I would suggest you to not to trade your bitcoins, as Shark said before bitcoin halving happens there will be huge upward surge in price. you will make more profit by holding than trading. That makes me sad.i don't know what will happen in coming days so i just want to constantly grow it.Till now,only altcoin trading wounds to me a great idea so if anyone please provide me some info where to start to learn altcoin trading and how to profit?Even 10$ a day would be fine too trading. 
i mean basic principle of trading when you win someone loses at the same time.so how can you give such halving advice crap to everyone and giving false hopes that everyone will profit?seeing the current trends i can only think of bitcoin being a bubble which is about to be burst The problem with Altcoin trading is that most of them are setup to benefit the creator and those close to them. Also known as pump and dumps. You would be at high risk if you started trading altcoins without prior knowledge.
If you really believe the bubble has burst, then you should sell. If you believe in the future of Bitcoin beyond the halvening, then you will want to increase your supply. There are sites like localbitcoins.com where you can sell your Bitcoin at a higher % than market value. Since the market is sliding down currently, you can sell at a higher % and then buy back more BTC as the price dips. That way you will have more coin for the future when price goes back up.