Just keep playing trust me it might pay off. It's better to live with "I tried" instead of "what if". I was the same way when I was in diamond, but made it to masters because didn't want to give up.
I'm plat now, end season is the worst moment to climb, thrower event and troll festival.
I'm surprised blizzard didn't make it an event with skin and loot at the end of every season yet..