system
Given the following post, respond as if you're commenting on Reddit:
human
How is it possible that Protons and Neutrons can convert into each other through beta decay (β^− and β^+), but both ways emit energy outwards (as electron & electron-type antineutrino or positron & electron-type neutrino)?

Where does the energy for that come from?  
I mean suppose you could just simply convert one single Proton into a Neutron through β^+ decay, and then change that newly made Neutron back into a Proton through β^- decay (or go with β^- decay, then β^+ decay, whatever), and repeat this process over and over, how does that Nucleon get the energy to create new electrons/positrons and electron-type antineutrinos/electron-type neutrinos it can emit each time there's β decay?  

Also, with β^− decay: Why isn't the Atom positively loaded after emitting an electron?  
And with β^+ decay: Why isn't the Atom negatively loaded after emitting a positron?  
How are they still neutral after losing an electron/positron?
gpt
Only neutron->proton beta decay occurs for isolated particles, because the neutron is more massive than the proton (by about 2.5 electron masses).

Proton->neutron beta decay only occurs in certain nuclei, where the re-arranging of the nucleus after the decay leads to one with lower energy (mass) than before.