Hi

I'm new to the crypto space. I'm looking at the ETH graph and I'm unsure if I should buy now. But its at an all time high, and I was taught to buy low sell high. I really don't want to be a sheep, but what if the price keeps going up? Should I just wait for it to go down and just buy the dip?
Yes, you are absolutely right, if you want to achieve big profits, save ETH for approximately 2 years. I used to do jmi when in late 2019 the price of ETH was still very low. And the proof is that it can increase up to 10 times.
Holding for two years is not bad but if you happen to buy right at the beginning of the bear market then that may not be enough to produce profits, it is better to just hold your coins for as long as you reasonably can, I know this is hard but you do not want to sell your coins too soon, you could sell now and obtain good profits but what if you can get enough money to change your life if you hold for the next decade? So as you can see in that case it is way better to wait.
Tough call but very possible, would you exchange that opportunities if you still have enough money to continue life?
This kind of investment can change a lifetime, imagine those who bought this coin when the big dumped happened, it went back to $80 after reaching more than $1k.
and now, we seen that huge pumped take place bringing new ath and provides huge profits to those who believes and keep their coins intact inside their wallets, that's very possible to repeat so make sure that you are ready and willing to take the long road to maximize the possible benefits.
I remember when ETH reached that price and many people were wondering if it will ever recover as people were very nervous due to the potential of the pandemic, those that took the risk are probably laughing all the way to the bank thanks to all the profits they got, but this is the way things work, people are worried right now about the price of ethereum but it will surely go higher during this year which means this is a reasonable entry point for those that want to get moderate profits.