I love spelunky and have beat it many times. I came into this understanding it would be hard and I would have to grind to slowly make progress. However, I have now died over a dozen times, never earning enough gold to buy any upgrades. Minimum is 140 gold for my upgrades and I'm lucky to get 100 per life, that's with destroying everything I can.
I'm not making any progress and it's not getting any easier. What am I doing wrong?