Quantitative Burning the Brain

Have been burning my brain learning: MSR, MSE, ANOVA, SSE, SEE, RSS, Heteroskedasticity, Breusch-Pagan, White-corrected, serial correlation, Durbin-watson, Hansen method, multicollinearity,probit, logit, discriminant analysis and now learning AR. Each time I learn, I'll enter into deep sleep. I really think these topics are just burning brain cells. Not sure how long I can last!