Actually every time is a right time. What matters here is taking care of the chosen investment.
Succesful investment today by some of the succesful persons really put some seriousness and effort to make their investment grow and become a success one. Honestly, even they already reached the status of success still they are putting lots of effort to make their investment much stronger.
That is correct. Every time,is the right time. I also read that "The best time to invest is NOW. Whenever we have a time to invest,do it now as time is always a good companion. Within time,our investment grows.
Off course, no time limit is here in investment or trading even in anywhere, so same here, no time close the investment. Every time is your time to start the earning.
and about the OP, now bitcoin is going best for investment, So best and simply way is buy the bitcoins and save them for a long time investment.