But its not tension free
No one will tell when bear market will end. We can only guess a bit and invest on climax reversal that might hold for some short time but then it can hammer down afterwords too. 2016 was only 20% odd, 2008 was 50-60%. 2016 Nifty 8k was good buy and then it went to 7k when many were crying bear, it was also a good buy. As long as long term market is up, economy is growing etc we can invest.
But still not tension free, japan crash for example i think held for many many years.
SIP is very helpful, but must have capital remaining and have courage too.
i remember buying at sensex 16k (on fall from 20k+) and then market went to 8k. Thankfully due to tax saving also bought at 12k then ...