It's less feeling the benefits - its more *not* feeling the muscle soreness/tiredness after a hard session.
If I do a really hard interval session or a race and don't have it in the hour after, the next day I have issues going down stairs, general pain/soreness. If I do have 4-500 Kcals straight after, in the right ratio, the feeling is much much reduced (YMMV).
Best way for me is progressive motivation. Set some targets:
Parkrun, then book a couple of 5Ks, then some 10Ks, then a couple of Halfs in the lead up, spread out. You'll then train for each one coming up and knowing you have a race in 2 weeks keeps you going (or me anyway!).
With race times you can then easily then tweak your training paces to train properly as you improve - I use mcmillanrunning.com to calculate these.
I also have a graphed spreadsheet showing my cumulative mileage as the year goes on (helped by a GPS watch logging everything on Garmin Connect) as I like stats/tech.