What do you mean by fresh?
I mean not tedious, or boring, or sick of. Or it's fun, & feels new-ish. It's hard to explain.
What activities do you do and suggest me to do?
In recent years, i've reached 100% boredom a LOT (& apathy, depression,..). I've gradually been getting out of that hole, where i had almost nothing to do (or that i felt like doing, which is apathy). To avoid getting depressed again, i have HAD to try to stay occupied with things, even though i was still very bored. I've created HABITS of doing various things (& those things becoming part of my comfort zone). I'm still getting there with boredom, but presently i'm not doing too bad.
I usually just do the activities off-the-cuff, but when i find i have nothing i WANT to do, i find having a LIST of things to do helps REMIND me that i have PLENTY of things i could be doing, and that right now i could very well WANT to do one or more such activities in the list.
I have 3 lists, starting with the most regular activities & which are most in my comfort zone:
(i have edited them for here)
Main list: computer(tetris, solitaire, socialphobiaworld, sort saved pics, online crosswords), walking/steps (have steps-counter on smartwatch; goal=2000 steps/day), chooks (let out, see, shut up), sheep (see), tv(my favorite soap), radio (classical), beer/spirits (fetch/drink), coffee/milo/tea (make/drink), biscuit/s, reheat cuppa (a few times), toilet(#1 & #2), youtube music (usu at night, with alcohol), chocolate/nutella, shower, prepare/take medication, enter item/s into Point Motivator program (is a motivational tool which i've just started using again)
Next list: computer(listen to brain audio, reading (offline/online), tv(news, ...), watch sunset, yoga, pressups/mini-workout, recharge watch/phone, tv(other), programming/scripting, crisps/thins/crackers, ring/txt sby, talk to sby in person, masturbate (usu to porn pics), go abroad (eg to town to do shopping)
Extra list: walk out amongst nature, reading (book/magazine), workout (full), have dinner at sby's home, play PSP/PS2/Pc-[emulator] games, watch [old] movie online, study/learn a foreign language
Of course, you will have your own lists, according to what you want in them, but i think the above lists could be a good place to start.