Take a breather my friend. Everyone tilts once in a while. Sometimes it might not be you and you shouldn't be so hard on yourself! Heres a few things i might be able to help you with.
If the enemy player flashes, thats a HUGE win. You might not have gotten the kill but now you have a lane where theres a lot of pressure on the enemy team. If he steps out of line, come back to the lane and killem.
Your cocoon is everything. If you don't lane your cocoon, you need to immediately back off unless your teammates were able to land a cc for you to be able to jump in. Don't force a gank, if you miss your opener just lick your chops and be aware there might be a counter gank.
Deep warding is an art. Never deep ward alone. Never deep ward without knowing where the enemy team is. If their mid lane is missing, gtfo of the enemy jungle. Same with bot lane. if you're bot side and top lane if you're top side. Also, if you're matchup isn't favorable, don't attempt to get offensive wards because if you get caught, its almost surely a death.
Lastly my friend, the major ideal that i follow as a jungler is one thing. Never go to a losing lane. Unless you can get an easy kill, its best to just go to lanes that are ahead. Hope this helps! And remember, have fun :) we all have hard times.