It is true that things will not increase forever, but I want to know when it will decrease? As a lot of people I know everything that can happen in this market, but the current situation is too early to discuss this. I think this is not the time for us to have doubts about it, I think the next time there will be very absolute for this market.
The truth is, you cannot know when it will decrease; and you can only guess not predict so do not look for such hints. Instead focus on your trades, your portfolio and ensure to take profit as oft as it comes. Except you hodling for an unforeseeable future, then your portfolio should be on your mind.
The timing issue one of the most important issues in portfolio management. When to buy and when to sell our coins makes the difference if we make a little profit or a huge profit. Everybody needs to decide for themselfs do they either want to take a normal profit and reduce the risk of getting caught in a down market, they should sell now. But if you do believe in bitcoins and hope for the big profits then it is better to wait and hold. It is always a tradeoff between missing out on profit and being caught in the selloff.