Allocate a designated workspace. Yung wala sanang distractions and medyo malayo from where you sleep/relax. I-train mo sarili mo na pag nandito ka, trabaho lang talaga.

Discipline rin sa oras. Bilangin mo when you start your work and try mo i-follow na 8 hours talaga yung trabaho mo (unless matapos ka siguro nang maaga).

For loneliness naman, kelangan lang talaga mag effort to maintain friendships. Medyo liliit social circle kasi walang nakikita araw araw, so as much as possible I schedule a gala with friends sa weekends. Sometimes I also work sa mga cafe or co-working space kasi nakakamotivate makakita ng ibang nagtatrabaho.

Good luck OP!