If you're a relative newcomer or you have blown your stash thinking you have years to faff around and accumulate my advice is do whatever you can to accumulate 1 Bitcoin before it reaches 100k.
Having a goal of owning 1 Bitcoin is just a psychological fallacy due to it being a natural number. There's no difference between owning 1, 0.9386, 0.346, 2.4756 BTC - your profits will scale lineally and that's it.
If you can jumpstart your entry by borrowing 10k, 20k or 30k from the banksters do it - Have no fear!
Yeah, this is horrible advice, never invest what you can't afford to lose.
During the journey you may want to punt a portion of your BTC on an Alt you believe will rise greatly - be careful though and do not panic if your alt crashes because 99% of the time they will recover to the price you bought in at.
And this is one of the worst advises you can give to people in crypto. Altcoins have no future, they all go to zero in the long run, even now if you look at their BTC prices, most of them are far below where they were years ago. You're literally losing bitcoins if you are buying altcoins.