You can make a living with these Bitcoins by The following ways:-
1. You can invest this amount in mining altcoins, but now I am not recommend you to try this way...
2. You can make own faucet and earn Bitcoins with it.
3. You can Gamble with it, but Gamble at your own risk I Don't recommend you to Gamble..
4. You can try out other investment sites just Search on Google....
1. Mining altcoin is a good choice to invest with that 1 btc because mining altcoins for me it's so profitable because their mining difficulty is not that high unlike bitcoin.
2. Making faucet is a not good one for me because we know that it's hard to maintain the amount that the faucet usually give to users because of the incoming halving and high price of bitcoin and i think if ever he make faucet now it will not be profitable anymore because i believe that the visitors will be lessened after halving because most of them are thinking that the faucet is just part of history and not a good one to earn a lot of satoshi. So it's not a good choice to invest with that 1btc
3. Gambling as you said is not advisable because gambling has a high risk of getting loss of all your bitcoin. So for me gambling is just for fun and not to take it seriously to earn a living.
4. Investment sites are good but we need to be careful because most of the investment site out there are just ponzi or scam. So it's better to do some research about the site and study on how the site work if you find out that they are paying bitcoin from the new investors then it's obviously a scam.