I think it's a good idea to invest in some new altcoins. Many of them will grow after week or some days.
For example I bought Particl 2 days ago and now its value increased by 20%.
If you did not do an analysis and if you do not know why that is the case then you just got lucky, this is a mistake many newbie traders make, they follow their gut and win and then they think that is the only thing that you need to have in order to earn some money in trading and that is simply not the case, you need to study the markets carefully before each trade.