How much can you earn with gambling?

gambled 10btc on a course of 1year something. lost around 14btc (because i won 4btc and wasnt happy enough)
since then i didnt gamble online again, i spend time trading its far better and i am now sitting on 190btc by trading for over 10-11months or so. was lucky i bought many coins on under 250$ and a few above. traded at 402$ for 100coins bought a lot when it hit 369 about a few days ago. waiting for 385$ to sell 100 again and trade again when its lower. gambling is an addiction that needs to be stopped rather than funded more. greed is a bad thing that will empty your wallet off your hard earned cash/btc

i also played roulette locally winning approx $3500 in 1 month and losing them in a bad beat.
i played only red-black covering 0 , even-odd covering 0, thirds covering with red-black and 0 & very very rare occasions low-high & numbers

edit: this is what i did but you have to do it with another person, that other person is very very important.

step 0: dont bring a lot of money to casino and leave your debit/credit card at home
step 1: go to a roulette machine in a casino locally, not human spin but automatic spin.
step 2 : sit for hours 5days in a row without betting a single cent but writing all the numbers
step 3: dont look at the numbers but at the colors, the odd-even and their frequency
step 4: since its automatic it can be beaten
step 5: have a lot of patience and dont sit and play
step 6: since you have analysed the colors and frequency, you will be able to see something very important
step 7: look for the frequency and restrict yourself to playing only 1-2 times per hour.
step 8: if you see R-R-R-B-R-R-R-B-R- its another red guaranteed, bet all you have or at least half the money you have.

if you win, great, if you lose sit back, and re start thinking again about the probability frequency.

once you win $100-$200 a day, then comes the most important, YOUR FRIEND HAS TO DRAG YOU OUT OF THE PLACE, else you will bet again (99% guarantee you will bet again)

martingale or other theories dont really work. its all in analysis of the game, knowing the game and able to predict more or less the frequency. but remember, ALWAYS COVER 0 or in some places 00 (covering means if the ball drops on these numbers, you have to win twice the amount you would win on the 1-1 edge of colors, even odds

once you start going to the casino daily and playing very slowly with 1 to 2 only per hour. you will start see-ing the pattern. BUT dont go alone like i did, take a very responsible person with you, someone who would be happy with small change. that person is the most important in your gambling strategy.

the maximum i got in 1 day (4-5hours) was $2,300. my friend dragged me out, i went home with him. he dropped me and i took a taxi and went again losing 80% of my win.

Always keep an A4 paper, write down day 1 day 2 and continue. put your starting amount, and the amount you returned home with, calculate the profit and write everything down on that paper. like a log of your bet and stuff (you will get lazy over time but you have to combat that laziness)

when you return home after winning 3-5 consecutive days (very easy if you follow this strategy) you will start see ing the change on the paper vis a vis your starting fund. but try your best to keep playing small, my smallest bet was $60 and biggest bet was $1000. you win some you lose less but greed takes them all.

p.s; i am in no way promoting roulette, just sharing my experience.

forgot to mention this,

MOST MOST MOST IMPORTANT, A WIN IS A WIN. IF YOU WENT TO THE CASINO WITH $10 AND CAME BACK WITH $11, TELL YOURSELF YOU WON THAT $1 AND YOU BEAT THE CASINO.

a few times i won $100-$300. then i played the "one last for the road" which i eventually lost, i brought with me $350, won $300. on the last bet i lost $50 but that gave me a heartpain, i raged to win it back because its MY $50. at those critical moment, you need a friend who will drag you out and prevent you to play, which i didnt have at that time. and went home walking back, not even having cash for a cab. i dont bring atm cards with me ever. that is another bad experience. lost $1000 by trying to get the loss back. it was a $100 loss and i could not digest it. i ended up using my card to fund it to win, to which you know the outcome.